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Finding the Fourth Proportional to 121,658.72, 167,796.53 and 104,691.24

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Solution

The fourth proportional to 121,658.72, 167,796.53 and 104,691.24 is: 144,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,658.72 : 167,796.53 = 104,691.24 : x
  2. Step 2: Convert to fraction form
    121,658.72/167,796.53 = 104,691.24/x
  3. Step 3: Cross multiply
    121,658.72x = 167,796.53 × 104,691.24
  4. Step 4: Simplify right side
    121,658.72x = 17,566,826,662.53
  5. Step 5: Solve for x
    x = 17,566,826,662.53/121,658.72
  6. Step 6: Final answer
    x = 144,394.31

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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.