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Finding the Fourth Proportional to 121,353.34, 167,468.38 and 67,641.76

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Solution

The fourth proportional to 121,353.34, 167,468.38 and 67,641.76 is: 93,346.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,353.34 : 167,468.38 = 67,641.76 : x
  2. Step 2: Convert to fraction form
    121,353.34/167,468.38 = 67,641.76/x
  3. Step 3: Cross multiply
    121,353.34x = 167,468.38 × 67,641.76
  4. Step 4: Simplify right side
    121,353.34x = 11,327,855,967.55
  5. Step 5: Solve for x
    x = 11,327,855,967.55/121,353.34
  6. Step 6: Final answer
    x = 93,346.06

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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.