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Finding the Fourth Proportional to 72,553.85, 108,765.16 and 25,795.79

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Solution

The fourth proportional to 72,553.85, 108,765.16 and 25,795.79 is: 38,670.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,553.85 : 108,765.16 = 25,795.79 : x
  2. Step 2: Convert to fraction form
    72,553.85/108,765.16 = 25,795.79/x
  3. Step 3: Cross multiply
    72,553.85x = 108,765.16 × 25,795.79
  4. Step 4: Simplify right side
    72,553.85x = 2,805,683,226.68
  5. Step 5: Solve for x
    x = 2,805,683,226.68/72,553.85
  6. Step 6: Final answer
    x = 38,670.36

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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.