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Finding the Fourth Proportional to 125,087.99, 187,642.31 and 40,846.28

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Solution

The fourth proportional to 125,087.99, 187,642.31 and 40,846.28 is: 61,272.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,087.99 : 187,642.31 = 40,846.28 : x
  2. Step 2: Convert to fraction form
    125,087.99/187,642.31 = 40,846.28/x
  3. Step 3: Cross multiply
    125,087.99x = 187,642.31 × 40,846.28
  4. Step 4: Simplify right side
    125,087.99x = 7,664,489,191.66
  5. Step 5: Solve for x
    x = 7,664,489,191.66/125,087.99
  6. Step 6: Final answer
    x = 61,272.78

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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.