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Finding the Fourth Proportional to 87,594.75, 120,754.78 and 62,400.51

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Solution

The fourth proportional to 87,594.75, 120,754.78 and 62,400.51 is: 86,022.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,594.75 : 120,754.78 = 62,400.51 : x
  2. Step 2: Convert to fraction form
    87,594.75/120,754.78 = 62,400.51/x
  3. Step 3: Cross multiply
    87,594.75x = 120,754.78 × 62,400.51
  4. Step 4: Simplify right side
    87,594.75x = 7,535,159,700.94
  5. Step 5: Solve for x
    x = 7,535,159,700.94/87,594.75
  6. Step 6: Final answer
    x = 86,022.96

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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.