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Finding the Fourth Proportional to 91,372.80, 137,059.20 and 32,275.20

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Solution

The fourth proportional to 91,372.80, 137,059.20 and 32,275.20 is: 48,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,372.80 : 137,059.20 = 32,275.20 : x
  2. Step 2: Convert to fraction form
    91,372.80/137,059.20 = 32,275.20/x
  3. Step 3: Cross multiply
    91,372.80x = 137,059.20 × 32,275.20
  4. Step 4: Simplify right side
    91,372.80x = 4,423,613,091.84
  5. Step 5: Solve for x
    x = 4,423,613,091.84/91,372.80
  6. Step 6: Final answer
    x = 48,412.80

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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.