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Finding the Fourth Proportional to 704,876,206.68, 972,745,366.32 and 387,356,193.45

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Solution

The fourth proportional to 704,876,206.68, 972,745,366.32 and 387,356,193.45 is: 534,560,450.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,876,206.68 : 972,745,366.32 = 387,356,193.45 : x
  2. Step 2: Convert to fraction form
    704,876,206.68/972,745,366.32 = 387,356,193.45/x
  3. Step 3: Cross multiply
    704,876,206.68x = 972,745,366.32 × 387,356,193.45
  4. Step 4: Simplify right side
    704,876,206.68x = 376,798,942,293,841,024
  5. Step 5: Solve for x
    x = 376,798,942,293,841,024/704,876,206.68
  6. Step 6: Final answer
    x = 534,560,450.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.