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Finding the Fourth Proportional to 119,607.71, 165,052.51 and 65,891.55

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Solution

The fourth proportional to 119,607.71, 165,052.51 and 65,891.55 is: 90,926.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,607.71 : 165,052.51 = 65,891.55 : x
  2. Step 2: Convert to fraction form
    119,607.71/165,052.51 = 65,891.55/x
  3. Step 3: Cross multiply
    119,607.71x = 165,052.51 × 65,891.55
  4. Step 4: Simplify right side
    119,607.71x = 10,875,565,715.29
  5. Step 5: Solve for x
    x = 10,875,565,715.29/119,607.71
  6. Step 6: Final answer
    x = 90,926.96

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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.