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Finding the Fourth Proportional to 125,278.88, 187,927.54 and 54,270.41

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Solution

The fourth proportional to 125,278.88, 187,927.54 and 54,270.41 is: 81,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,278.88 : 187,927.54 = 54,270.41 : x
  2. Step 2: Convert to fraction form
    125,278.88/187,927.54 = 54,270.41/x
  3. Step 3: Cross multiply
    125,278.88x = 187,927.54 × 54,270.41
  4. Step 4: Simplify right side
    125,278.88x = 10,198,903,876.05
  5. Step 5: Solve for x
    x = 10,198,903,876.05/125,278.88
  6. Step 6: Final answer
    x = 81,409.60

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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.