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Finding the Fourth Proportional to 653,299,934.40, 979,949,901.60 and 289,794,290.40

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Solution

The fourth proportional to 653,299,934.40, 979,949,901.60 and 289,794,290.40 is: 434,691,435.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,299,934.40 : 979,949,901.60 = 289,794,290.40 : x
  2. Step 2: Convert to fraction form
    653,299,934.40/979,949,901.60 = 289,794,290.40/x
  3. Step 3: Cross multiply
    653,299,934.40x = 979,949,901.60 × 289,794,290.40
  4. Step 4: Simplify right side
    653,299,934.40x = 283,983,886,361,721,824
  5. Step 5: Solve for x
    x = 283,983,886,361,721,824/653,299,934.40
  6. Step 6: Final answer
    x = 434,691,435.60

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Half scale
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Double scale
Find fourth proportional to 653,299,935.40, 979,949,903.10 and 289,794,291.40
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.