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Finding the Fourth Proportional to 119,838.61, 165,376.24 and 66,124.14

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Solution

The fourth proportional to 119,838.61, 165,376.24 and 66,124.14 is: 91,250.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,838.61 : 165,376.24 = 66,124.14 : x
  2. Step 2: Convert to fraction form
    119,838.61/165,376.24 = 66,124.14/x
  3. Step 3: Cross multiply
    119,838.61x = 165,376.24 × 66,124.14
  4. Step 4: Simplify right side
    119,838.61x = 10,935,361,646.43
  5. Step 5: Solve for x
    x = 10,935,361,646.43/119,838.61
  6. Step 6: Final answer
    x = 91,250.74

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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.