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Finding the Fourth Proportional to 123,099.46, 169,875.21 and 69,384.58

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Solution

The fourth proportional to 123,099.46, 169,875.21 and 69,384.58 is: 95,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,099.46 : 169,875.21 = 69,384.58 : x
  2. Step 2: Convert to fraction form
    123,099.46/169,875.21 = 69,384.58/x
  3. Step 3: Cross multiply
    123,099.46x = 169,875.21 × 69,384.58
  4. Step 4: Simplify right side
    123,099.46x = 11,786,720,098.26
  5. Step 5: Solve for x
    x = 11,786,720,098.26/123,099.46
  6. Step 6: Final answer
    x = 95,749.57

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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.