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Finding the Fourth Proportional to 88,761.91, 122,490.61 and 48,475.55

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Solution

The fourth proportional to 88,761.91, 122,490.61 and 48,475.55 is: 66,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,761.91 : 122,490.61 = 48,475.55 : x
  2. Step 2: Convert to fraction form
    88,761.91/122,490.61 = 48,475.55/x
  3. Step 3: Cross multiply
    88,761.91x = 122,490.61 × 48,475.55
  4. Step 4: Simplify right side
    88,761.91x = 5,937,798,955.94
  5. Step 5: Solve for x
    x = 5,937,798,955.94/88,761.91
  6. Step 6: Final answer
    x = 66,895.80

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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.