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Finding the Fourth Proportional to 123,843.60, 170,901.36 and 67,253.76

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Solution

The fourth proportional to 123,843.60, 170,901.36 and 67,253.76 is: 92,808.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,843.60 : 170,901.36 = 67,253.76 : x
  2. Step 2: Convert to fraction form
    123,843.60/170,901.36 = 67,253.76/x
  3. Step 3: Cross multiply
    123,843.60x = 170,901.36 × 67,253.76
  4. Step 4: Simplify right side
    123,843.60x = 11,493,759,049.11
  5. Step 5: Solve for x
    x = 11,493,759,049.11/123,843.60
  6. Step 6: Final answer
    x = 92,808.66

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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.