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Finding the Fourth Proportional to 118,966.52, 164,172.67 and 65,251.75

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Solution

The fourth proportional to 118,966.52, 164,172.67 and 65,251.75 is: 90,046.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,966.52 : 164,172.67 = 65,251.75 : x
  2. Step 2: Convert to fraction form
    118,966.52/164,172.67 = 65,251.75/x
  3. Step 3: Cross multiply
    118,966.52x = 164,172.67 × 65,251.75
  4. Step 4: Simplify right side
    118,966.52x = 10,712,554,019.67
  5. Step 5: Solve for x
    x = 10,712,554,019.67/118,966.52
  6. Step 6: Final answer
    x = 90,046.80

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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.