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Finding the Fourth Proportional to 48,251.80, 72,377.70 and 45,717.40

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Solution

The fourth proportional to 48,251.80, 72,377.70 and 45,717.40 is: 68,576.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,251.80 : 72,377.70 = 45,717.40 : x
  2. Step 2: Convert to fraction form
    48,251.80/72,377.70 = 45,717.40/x
  3. Step 3: Cross multiply
    48,251.80x = 72,377.70 × 45,717.40
  4. Step 4: Simplify right side
    48,251.80x = 3,308,920,261.98
  5. Step 5: Solve for x
    x = 3,308,920,261.98/48,251.80
  6. Step 6: Final answer
    x = 68,576.10

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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.