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Finding the Fourth Proportional to 48,680.40, 72,905.40 and 33,013.20

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Solution

The fourth proportional to 48,680.40, 72,905.40 and 33,013.20 is: 49,441.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,680.40 : 72,905.40 = 33,013.20 : x
  2. Step 2: Convert to fraction form
    48,680.40/72,905.40 = 33,013.20/x
  3. Step 3: Cross multiply
    48,680.40x = 72,905.40 × 33,013.20
  4. Step 4: Simplify right side
    48,680.40x = 2,406,840,551.28
  5. Step 5: Solve for x
    x = 2,406,840,551.28/48,680.40
  6. Step 6: Final answer
    x = 49,441.68

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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.