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Finding the Fourth Proportional to 123,079.71, 169,847.62 and 69,363.64

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Solution

The fourth proportional to 123,079.71, 169,847.62 and 69,363.64 is: 95,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,079.71 : 169,847.62 = 69,363.64 : x
  2. Step 2: Convert to fraction form
    123,079.71/169,847.62 = 69,363.64/x
  3. Step 3: Cross multiply
    123,079.71x = 169,847.62 × 69,363.64
  4. Step 4: Simplify right side
    123,079.71x = 11,781,249,168.54
  5. Step 5: Solve for x
    x = 11,781,249,168.54/123,079.71
  6. Step 6: Final answer
    x = 95,720.48

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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.