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Finding the Fourth Proportional to 123,704.66, 170,753.46 and 87,998.24

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Solution

The fourth proportional to 123,704.66, 170,753.46 and 87,998.24 is: 121,466.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,704.66 : 170,753.46 = 87,998.24 : x
  2. Step 2: Convert to fraction form
    123,704.66/170,753.46 = 87,998.24/x
  3. Step 3: Cross multiply
    123,704.66x = 170,753.46 × 87,998.24
  4. Step 4: Simplify right side
    123,704.66x = 15,026,003,953.91
  5. Step 5: Solve for x
    x = 15,026,003,953.91/123,704.66
  6. Step 6: Final answer
    x = 121,466.76

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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.