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Finding the Fourth Proportional to 62,584.20, 93,876.30 and 21,031.20

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Solution

The fourth proportional to 62,584.20, 93,876.30 and 21,031.20 is: 31,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,584.20 : 93,876.30 = 21,031.20 : x
  2. Step 2: Convert to fraction form
    62,584.20/93,876.30 = 21,031.20/x
  3. Step 3: Cross multiply
    62,584.20x = 93,876.30 × 21,031.20
  4. Step 4: Simplify right side
    62,584.20x = 1,974,331,240.56
  5. Step 5: Solve for x
    x = 1,974,331,240.56/62,584.20
  6. Step 6: Final answer
    x = 31,546.80

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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.