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Finding the Fourth Proportional to 478,955,928.60, 718,433,892.90 and 478,955,928.60

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Solution

The fourth proportional to 478,955,928.60, 718,433,892.90 and 478,955,928.60 is: 718,433,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,955,928.60 : 718,433,892.90 = 478,955,928.60 : x
  2. Step 2: Convert to fraction form
    478,955,928.60/718,433,892.90 = 478,955,928.60/x
  3. Step 3: Cross multiply
    478,955,928.60x = 718,433,892.90 × 478,955,928.60
  4. Step 4: Simplify right side
    478,955,928.60x = 344,098,172,311,632,448
  5. Step 5: Solve for x
    x = 344,098,172,311,632,448/478,955,928.60
  6. Step 6: Final answer
    x = 718,433,892.90

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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.