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Finding the Fourth Proportional to 478,962,003.70, 718,443,005.55 and 478,962,003.70

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Solution

The fourth proportional to 478,962,003.70, 718,443,005.55 and 478,962,003.70 is: 718,443,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,962,003.70 : 718,443,005.55 = 478,962,003.70 : x
  2. Step 2: Convert to fraction form
    478,962,003.70/718,443,005.55 = 478,962,003.70/x
  3. Step 3: Cross multiply
    478,962,003.70x = 718,443,005.55 × 478,962,003.70
  4. Step 4: Simplify right side
    478,962,003.70x = 344,106,901,482,478,208
  5. Step 5: Solve for x
    x = 344,106,901,482,478,208/478,962,003.70
  6. Step 6: Final answer
    x = 718,443,005.55

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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.