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Finding the Fourth Proportional to 704,406,759.31, 972,171,008.28 and 425,950,275.73

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Solution

The fourth proportional to 704,406,759.31, 972,171,008.28 and 425,950,275.73 is: 587,865,609.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,406,759.31 : 972,171,008.28 = 425,950,275.73 : x
  2. Step 2: Convert to fraction form
    704,406,759.31/972,171,008.28 = 425,950,275.73/x
  3. Step 3: Cross multiply
    704,406,759.31x = 972,171,008.28 × 425,950,275.73
  4. Step 4: Simplify right side
    704,406,759.31x = 414,096,509,033,578,112
  5. Step 5: Solve for x
    x = 414,096,509,033,578,112/704,406,759.31
  6. Step 6: Final answer
    x = 587,865,609.69

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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.