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Finding the Fourth Proportional to 655,934.20, 983,901.30 and 445,982.20

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Solution

The fourth proportional to 655,934.20, 983,901.30 and 445,982.20 is: 668,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,934.20 : 983,901.30 = 445,982.20 : x
  2. Step 2: Convert to fraction form
    655,934.20/983,901.30 = 445,982.20/x
  3. Step 3: Cross multiply
    655,934.20x = 983,901.30 × 445,982.20
  4. Step 4: Simplify right side
    655,934.20x = 438,802,466,356.86
  5. Step 5: Solve for x
    x = 438,802,466,356.86/655,934.20
  6. Step 6: Final answer
    x = 668,973.30

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Half scale
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Double scale
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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.