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Finding the Fourth Proportional to 121,458.96, 167,613.66 and 67,747.46

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Solution

The fourth proportional to 121,458.96, 167,613.66 and 67,747.46 is: 93,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,458.96 : 167,613.66 = 67,747.46 : x
  2. Step 2: Convert to fraction form
    121,458.96/167,613.66 = 67,747.46/x
  3. Step 3: Cross multiply
    121,458.96x = 167,613.66 × 67,747.46
  4. Step 4: Simplify right side
    121,458.96x = 11,355,398,888.24
  5. Step 5: Solve for x
    x = 11,355,398,888.24/121,458.96
  6. Step 6: Final answer
    x = 93,491.65

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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.