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Finding the Fourth Proportional to 110,691.38, 152,793.55 and 65,369.55

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Solution

The fourth proportional to 110,691.38, 152,793.55 and 65,369.55 is: 90,233.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,691.38 : 152,793.55 = 65,369.55 : x
  2. Step 2: Convert to fraction form
    110,691.38/152,793.55 = 65,369.55/x
  3. Step 3: Cross multiply
    110,691.38x = 152,793.55 × 65,369.55
  4. Step 4: Simplify right side
    110,691.38x = 9,988,045,606.40
  5. Step 5: Solve for x
    x = 9,988,045,606.40/110,691.38
  6. Step 6: Final answer
    x = 90,233.27

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1.5x scale

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.