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Finding the Fourth Proportional to 48,665.90, 72,971.51 and 15,394.34

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Solution

The fourth proportional to 48,665.90, 72,971.51 and 15,394.34 is: 23,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,665.90 : 72,971.51 = 15,394.34 : x
  2. Step 2: Convert to fraction form
    48,665.90/72,971.51 = 15,394.34/x
  3. Step 3: Cross multiply
    48,665.90x = 72,971.51 × 15,394.34
  4. Step 4: Simplify right side
    48,665.90x = 1,123,347,793.42
  5. Step 5: Solve for x
    x = 1,123,347,793.42/48,665.90
  6. Step 6: Final answer
    x = 23,082.85

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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.