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Finding the Fourth Proportional to 121,535.91, 167,719.58 and 67,088.11

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Solution

The fourth proportional to 121,535.91, 167,719.58 and 67,088.11 is: 92,581.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,535.91 : 167,719.58 = 67,088.11 : x
  2. Step 2: Convert to fraction form
    121,535.91/167,719.58 = 67,088.11/x
  3. Step 3: Cross multiply
    121,535.91x = 167,719.58 × 67,088.11
  4. Step 4: Simplify right side
    121,535.91x = 11,251,989,585.02
  5. Step 5: Solve for x
    x = 11,251,989,585.02/121,535.91
  6. Step 6: Final answer
    x = 92,581.61

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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.