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Finding the Fourth Proportional to 691,691.97, 954,536.61 and 385,788.16

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Solution

The fourth proportional to 691,691.97, 954,536.61 and 385,788.16 is: 532,388.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,691.97 : 954,536.61 = 385,788.16 : x
  2. Step 2: Convert to fraction form
    691,691.97/954,536.61 = 385,788.16/x
  3. Step 3: Cross multiply
    691,691.97x = 954,536.61 × 385,788.16
  4. Step 4: Simplify right side
    691,691.97x = 368,248,923,617.71
  5. Step 5: Solve for x
    x = 368,248,923,617.71/691,691.97
  6. Step 6: Final answer
    x = 532,388.61

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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.