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Finding the Fourth Proportional to 125,020.40, 187,577.60 and 74,448.63

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Solution

The fourth proportional to 125,020.40, 187,577.60 and 74,448.63 is: 111,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,020.40 : 187,577.60 = 74,448.63 : x
  2. Step 2: Convert to fraction form
    125,020.40/187,577.60 = 74,448.63/x
  3. Step 3: Cross multiply
    125,020.40x = 187,577.60 × 74,448.63
  4. Step 4: Simplify right side
    125,020.40x = 13,964,894,966.44
  5. Step 5: Solve for x
    x = 13,964,894,966.44/125,020.40
  6. Step 6: Final answer
    x = 111,700.93

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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.