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Finding the Fourth Proportional to 83,990.53, 125,371.38 and 74,026.32

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Solution

The fourth proportional to 83,990.53, 125,371.38 and 74,026.32 is: 110,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,990.53 : 125,371.38 = 74,026.32 : x
  2. Step 2: Convert to fraction form
    83,990.53/125,371.38 = 74,026.32/x
  3. Step 3: Cross multiply
    83,990.53x = 125,371.38 × 74,026.32
  4. Step 4: Simplify right side
    83,990.53x = 9,280,781,894.72
  5. Step 5: Solve for x
    x = 9,280,781,894.72/83,990.53
  6. Step 6: Final answer
    x = 110,497.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.