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Finding the Fourth Proportional to 125,116.97, 187,801.81 and 110,978.01

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Solution

The fourth proportional to 125,116.97, 187,801.81 and 110,978.01 is: 166,579.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,116.97 : 187,801.81 = 110,978.01 : x
  2. Step 2: Convert to fraction form
    125,116.97/187,801.81 = 110,978.01/x
  3. Step 3: Cross multiply
    125,116.97x = 187,801.81 × 110,978.01
  4. Step 4: Simplify right side
    125,116.97x = 20,841,870,870.75
  5. Step 5: Solve for x
    x = 20,841,870,870.75/125,116.97
  6. Step 6: Final answer
    x = 166,579.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.