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Finding the Fourth Proportional to 125,012.85, 187,388.06 and 89,933.37

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Solution

The fourth proportional to 125,012.85, 187,388.06 and 89,933.37 is: 134,805.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,012.85 : 187,388.06 = 89,933.37 : x
  2. Step 2: Convert to fraction form
    125,012.85/187,388.06 = 89,933.37/x
  3. Step 3: Cross multiply
    125,012.85x = 187,388.06 × 89,933.37
  4. Step 4: Simplify right side
    125,012.85x = 16,852,439,283.90
  5. Step 5: Solve for x
    x = 16,852,439,283.90/125,012.85
  6. Step 6: Final answer
    x = 134,805.66

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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.