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Finding the Fourth Proportional to 59,138.70, 88,708.05 and 31,047.90

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Solution

The fourth proportional to 59,138.70, 88,708.05 and 31,047.90 is: 46,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,138.70 : 88,708.05 = 31,047.90 : x
  2. Step 2: Convert to fraction form
    59,138.70/88,708.05 = 31,047.90/x
  3. Step 3: Cross multiply
    59,138.70x = 88,708.05 × 31,047.90
  4. Step 4: Simplify right side
    59,138.70x = 2,754,198,665.60
  5. Step 5: Solve for x
    x = 2,754,198,665.60/59,138.70
  6. Step 6: Final answer
    x = 46,571.85

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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.