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Finding the Fourth Proportional to 89,039.66, 122,869.31 and 48,753.90

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Solution

The fourth proportional to 89,039.66, 122,869.31 and 48,753.90 is: 67,277.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,039.66 : 122,869.31 = 48,753.90 : x
  2. Step 2: Convert to fraction form
    89,039.66/122,869.31 = 48,753.90/x
  3. Step 3: Cross multiply
    89,039.66x = 122,869.31 × 48,753.90
  4. Step 4: Simplify right side
    89,039.66x = 5,990,357,809.04
  5. Step 5: Solve for x
    x = 5,990,357,809.04/89,039.66
  6. Step 6: Final answer
    x = 67,277.41

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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.