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Finding the Fourth Proportional to 118,740.62, 163,854.54 and 65,026.28

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Solution

The fourth proportional to 118,740.62, 163,854.54 and 65,026.28 is: 89,732.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,740.62 : 163,854.54 = 65,026.28 : x
  2. Step 2: Convert to fraction form
    118,740.62/163,854.54 = 65,026.28/x
  3. Step 3: Cross multiply
    118,740.62x = 163,854.54 × 65,026.28
  4. Step 4: Simplify right side
    118,740.62x = 10,654,850,378.04
  5. Step 5: Solve for x
    x = 10,654,850,378.04/118,740.62
  6. Step 6: Final answer
    x = 89,732.15

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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.