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Finding the Fourth Proportional to 39,059.56, 58,575.90 and 12,757.78

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Solution

The fourth proportional to 39,059.56, 58,575.90 and 12,757.78 is: 19,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,059.56 : 58,575.90 = 12,757.78 : x
  2. Step 2: Convert to fraction form
    39,059.56/58,575.90 = 12,757.78/x
  3. Step 3: Cross multiply
    39,059.56x = 58,575.90 × 12,757.78
  4. Step 4: Simplify right side
    39,059.56x = 747,298,445.50
  5. Step 5: Solve for x
    x = 747,298,445.50/39,059.56
  6. Step 6: Final answer
    x = 19,132.28

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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.