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Finding the Fourth Proportional to 39,167.55, 58,748.90 and 12,512.88

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Solution

The fourth proportional to 39,167.55, 58,748.90 and 12,512.88 is: 18,768.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,167.55 : 58,748.90 = 12,512.88 : x
  2. Step 2: Convert to fraction form
    39,167.55/58,748.90 = 12,512.88/x
  3. Step 3: Cross multiply
    39,167.55x = 58,748.90 × 12,512.88
  4. Step 4: Simplify right side
    39,167.55x = 735,117,873.27
  5. Step 5: Solve for x
    x = 735,117,873.27/39,167.55
  6. Step 6: Final answer
    x = 18,768.54

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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.