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Finding the Fourth Proportional to 123,124.77, 169,912.17 and 66,536.14

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Solution

The fourth proportional to 123,124.77, 169,912.17 and 66,536.14 is: 91,819.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,124.77 : 169,912.17 = 66,536.14 : x
  2. Step 2: Convert to fraction form
    123,124.77/169,912.17 = 66,536.14/x
  3. Step 3: Cross multiply
    123,124.77x = 169,912.17 × 66,536.14
  4. Step 4: Simplify right side
    123,124.77x = 11,305,299,930.82
  5. Step 5: Solve for x
    x = 11,305,299,930.82/123,124.77
  6. Step 6: Final answer
    x = 91,819.87

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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.