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Finding the Fourth Proportional to 62,139.20, 93,208.80 and 60,411.20

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Solution

The fourth proportional to 62,139.20, 93,208.80 and 60,411.20 is: 90,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,139.20 : 93,208.80 = 60,411.20 : x
  2. Step 2: Convert to fraction form
    62,139.20/93,208.80 = 60,411.20/x
  3. Step 3: Cross multiply
    62,139.20x = 93,208.80 × 60,411.20
  4. Step 4: Simplify right side
    62,139.20x = 5,630,855,458.56
  5. Step 5: Solve for x
    x = 5,630,855,458.56/62,139.20
  6. Step 6: Final answer
    x = 90,616.80

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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.