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Finding the Fourth Proportional to 119,891.61, 165,450.43 and 66,176.64

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Solution

The fourth proportional to 119,891.61, 165,450.43 and 66,176.64 is: 91,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,891.61 : 165,450.43 = 66,176.64 : x
  2. Step 2: Convert to fraction form
    119,891.61/165,450.43 = 66,176.64/x
  3. Step 3: Cross multiply
    119,891.61x = 165,450.43 × 66,176.64
  4. Step 4: Simplify right side
    119,891.61x = 10,948,953,543.96
  5. Step 5: Solve for x
    x = 10,948,953,543.96/119,891.61
  6. Step 6: Final answer
    x = 91,323.77

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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.