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Finding the Fourth Proportional to 169,070.64, 233,315.79 and 91,545.90

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Solution

The fourth proportional to 169,070.64, 233,315.79 and 91,545.90 is: 126,332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,070.64 : 233,315.79 = 91,545.90 : x
  2. Step 2: Convert to fraction form
    169,070.64/233,315.79 = 91,545.90/x
  3. Step 3: Cross multiply
    169,070.64x = 233,315.79 × 91,545.90
  4. Step 4: Simplify right side
    169,070.64x = 21,359,103,979.76
  5. Step 5: Solve for x
    x = 21,359,103,979.76/169,070.64
  6. Step 6: Final answer
    x = 126,332.43

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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.