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Finding the Fourth Proportional to 121,353.44, 167,468.54 and 67,641.89

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Solution

The fourth proportional to 121,353.44, 167,468.54 and 67,641.89 is: 93,346.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,353.44 : 167,468.54 = 67,641.89 : x
  2. Step 2: Convert to fraction form
    121,353.44/167,468.54 = 67,641.89/x
  3. Step 3: Cross multiply
    121,353.44x = 167,468.54 × 67,641.89
  4. Step 4: Simplify right side
    121,353.44x = 11,327,887,385.59
  5. Step 5: Solve for x
    x = 11,327,887,385.59/121,353.44
  6. Step 6: Final answer
    x = 93,346.24

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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.