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Finding the Fourth Proportional to 616,006.51, 922,073.96 and 391,620.31

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Solution

The fourth proportional to 616,006.51, 922,073.96 and 391,620.31 is: 586,199.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,006.51 : 922,073.96 = 391,620.31 : x
  2. Step 2: Convert to fraction form
    616,006.51/922,073.96 = 391,620.31/x
  3. Step 3: Cross multiply
    616,006.51x = 922,073.96 × 391,620.31
  4. Step 4: Simplify right side
    616,006.51x = 361,102,888,731.99
  5. Step 5: Solve for x
    x = 361,102,888,731.99/616,006.51
  6. Step 6: Final answer
    x = 586,199.80

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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.