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Finding the Fourth Proportional to 87,510.65, 120,761.48 and 53,506.44

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Solution

The fourth proportional to 87,510.65, 120,761.48 and 53,506.44 is: 73,836.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,510.65 : 120,761.48 = 53,506.44 : x
  2. Step 2: Convert to fraction form
    87,510.65/120,761.48 = 53,506.44/x
  3. Step 3: Cross multiply
    87,510.65x = 120,761.48 × 53,506.44
  4. Step 4: Simplify right side
    87,510.65x = 6,461,517,017.70
  5. Step 5: Solve for x
    x = 6,461,517,017.70/87,510.65
  6. Step 6: Final answer
    x = 73,836.93

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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.