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Finding the Fourth Proportional to 62,912.40, 86,809.20 and 36,049.74

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Solution

The fourth proportional to 62,912.40, 86,809.20 and 36,049.74 is: 49,742.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,912.40 : 86,809.20 = 36,049.74 : x
  2. Step 2: Convert to fraction form
    62,912.40/86,809.20 = 36,049.74/x
  3. Step 3: Cross multiply
    62,912.40x = 86,809.20 × 36,049.74
  4. Step 4: Simplify right side
    62,912.40x = 3,129,449,089.61
  5. Step 5: Solve for x
    x = 3,129,449,089.61/62,912.40
  6. Step 6: Final answer
    x = 49,742.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.