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Finding the Fourth Proportional to 62,436.80, 93,655.20 and 55,219.70

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Solution

The fourth proportional to 62,436.80, 93,655.20 and 55,219.70 is: 82,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,436.80 : 93,655.20 = 55,219.70 : x
  2. Step 2: Convert to fraction form
    62,436.80/93,655.20 = 55,219.70/x
  3. Step 3: Cross multiply
    62,436.80x = 93,655.20 × 55,219.70
  4. Step 4: Simplify right side
    62,436.80x = 5,171,612,047.44
  5. Step 5: Solve for x
    x = 5,171,612,047.44/62,436.80
  6. Step 6: Final answer
    x = 82,829.55

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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.