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Finding the Fourth Proportional to 73,238.20, 101,068.68 and 39,704.20

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Solution

The fourth proportional to 73,238.20, 101,068.68 and 39,704.20 is: 54,791.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,238.20 : 101,068.68 = 39,704.20 : x
  2. Step 2: Convert to fraction form
    73,238.20/101,068.68 = 39,704.20/x
  3. Step 3: Cross multiply
    73,238.20x = 101,068.68 × 39,704.20
  4. Step 4: Simplify right side
    73,238.20x = 4,012,851,084.46
  5. Step 5: Solve for x
    x = 4,012,851,084.46/73,238.20
  6. Step 6: Final answer
    x = 54,791.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.