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Finding the Fourth Proportional to 88,718.61, 122,431.89 and 48,432.39

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Solution

The fourth proportional to 88,718.61, 122,431.89 and 48,432.39 is: 66,836.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,718.61 : 122,431.89 = 48,432.39 : x
  2. Step 2: Convert to fraction form
    88,718.61/122,431.89 = 48,432.39/x
  3. Step 3: Cross multiply
    88,718.61x = 122,431.89 × 48,432.39
  4. Step 4: Simplify right side
    88,718.61x = 5,929,669,044.92
  5. Step 5: Solve for x
    x = 5,929,669,044.92/88,718.61
  6. Step 6: Final answer
    x = 66,836.81

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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.