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Finding the Fourth Proportional to 38,980.34, 58,469.70 and 15,600.50

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Solution

The fourth proportional to 38,980.34, 58,469.70 and 15,600.50 is: 23,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,980.34 : 58,469.70 = 15,600.50 : x
  2. Step 2: Convert to fraction form
    38,980.34/58,469.70 = 15,600.50/x
  3. Step 3: Cross multiply
    38,980.34x = 58,469.70 × 15,600.50
  4. Step 4: Simplify right side
    38,980.34x = 912,156,554.85
  5. Step 5: Solve for x
    x = 912,156,554.85/38,980.34
  6. Step 6: Final answer
    x = 23,400.43

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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.