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Finding the Fourth Proportional to 121,502.43, 167,672.28 and 67,055.24

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Solution

The fourth proportional to 121,502.43, 167,672.28 and 67,055.24 is: 92,535.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,502.43 : 167,672.28 = 67,055.24 : x
  2. Step 2: Convert to fraction form
    121,502.43/167,672.28 = 67,055.24/x
  3. Step 3: Cross multiply
    121,502.43x = 167,672.28 × 67,055.24
  4. Step 4: Simplify right side
    121,502.43x = 11,243,305,270.20
  5. Step 5: Solve for x
    x = 11,243,305,270.20/121,502.43
  6. Step 6: Final answer
    x = 92,535.64

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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.