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Finding the Fourth Proportional to 91,951.10, 137,926.65 and 54,626.30

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Solution

The fourth proportional to 91,951.10, 137,926.65 and 54,626.30 is: 81,939.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,951.10 : 137,926.65 = 54,626.30 : x
  2. Step 2: Convert to fraction form
    91,951.10/137,926.65 = 54,626.30/x
  3. Step 3: Cross multiply
    91,951.10x = 137,926.65 × 54,626.30
  4. Step 4: Simplify right side
    91,951.10x = 7,534,422,560.90
  5. Step 5: Solve for x
    x = 7,534,422,560.90/91,951.10
  6. Step 6: Final answer
    x = 81,939.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.