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Finding the Fourth Proportional to 123,589.98, 170,562.92 and 69,875.51

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Solution

The fourth proportional to 123,589.98, 170,562.92 and 69,875.51 is: 96,433.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,589.98 : 170,562.92 = 69,875.51 : x
  2. Step 2: Convert to fraction form
    123,589.98/170,562.92 = 69,875.51/x
  3. Step 3: Cross multiply
    123,589.98x = 170,562.92 × 69,875.51
  4. Step 4: Simplify right side
    123,589.98x = 11,918,169,819.90
  5. Step 5: Solve for x
    x = 11,918,169,819.90/123,589.98
  6. Step 6: Final answer
    x = 96,433.14

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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.