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Finding the Fourth Proportional to 478,367,434.40, 717,551,151.60 and 478,367,434.40

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Solution

The fourth proportional to 478,367,434.40, 717,551,151.60 and 478,367,434.40 is: 717,551,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,367,434.40 : 717,551,151.60 = 478,367,434.40 : x
  2. Step 2: Convert to fraction form
    478,367,434.40/717,551,151.60 = 478,367,434.40/x
  3. Step 3: Cross multiply
    478,367,434.40x = 717,551,151.60 × 478,367,434.40
  4. Step 4: Simplify right side
    478,367,434.40x = 343,253,103,441,657,472
  5. Step 5: Solve for x
    x = 343,253,103,441,657,472/478,367,434.40
  6. Step 6: Final answer
    x = 717,551,151.60

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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.