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Finding the Fourth Proportional to 645,868,896.60, 968,803,344.90 and 645,868,896.60

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Solution

The fourth proportional to 645,868,896.60, 968,803,344.90 and 645,868,896.60 is: 968,803,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,868,896.60 : 968,803,344.90 = 645,868,896.60 : x
  2. Step 2: Convert to fraction form
    645,868,896.60/968,803,344.90 = 645,868,896.60/x
  3. Step 3: Cross multiply
    645,868,896.60x = 968,803,344.90 × 645,868,896.60
  4. Step 4: Simplify right side
    645,868,896.60x = 625,719,947,392,952,192
  5. Step 5: Solve for x
    x = 625,719,947,392,952,192/645,868,896.60
  6. Step 6: Final answer
    x = 968,803,344.90

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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.