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Finding the Fourth Proportional to 67,791.20, 101,715.60 and 32,712.80

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Solution

The fourth proportional to 67,791.20, 101,715.60 and 32,712.80 is: 49,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,791.20 : 101,715.60 = 32,712.80 : x
  2. Step 2: Convert to fraction form
    67,791.20/101,715.60 = 32,712.80/x
  3. Step 3: Cross multiply
    67,791.20x = 101,715.60 × 32,712.80
  4. Step 4: Simplify right side
    67,791.20x = 3,327,402,079.68
  5. Step 5: Solve for x
    x = 3,327,402,079.68/67,791.20
  6. Step 6: Final answer
    x = 49,083.10

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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.