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Finding the Fourth Proportional to 121,475.01, 167,635.40 and 67,760

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Solution

The fourth proportional to 121,475.01, 167,635.40 and 67,760 is: 93,508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,475.01 : 167,635.40 = 67,760 : x
  2. Step 2: Convert to fraction form
    121,475.01/167,635.40 = 67,760/x
  3. Step 3: Cross multiply
    121,475.01x = 167,635.40 × 67,760
  4. Step 4: Simplify right side
    121,475.01x = 11,358,974,704
  5. Step 5: Solve for x
    x = 11,358,974,704/121,475.01
  6. Step 6: Final answer
    x = 93,508.74

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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.