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Finding the Fourth Proportional to 231,575.68, 347,182.05 and 91,439.20

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Solution

The fourth proportional to 231,575.68, 347,182.05 and 91,439.20 is: 137,087.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,575.68 : 347,182.05 = 91,439.20 : x
  2. Step 2: Convert to fraction form
    231,575.68/347,182.05 = 91,439.20/x
  3. Step 3: Cross multiply
    231,575.68x = 347,182.05 × 91,439.20
  4. Step 4: Simplify right side
    231,575.68x = 31,746,047,170.45
  5. Step 5: Solve for x
    x = 31,746,047,170.45/231,575.68
  6. Step 6: Final answer
    x = 137,087.14

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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.