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Finding the Fourth Proportional to 48,640.78, 72,970.92 and 15,363.94

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Solution

The fourth proportional to 48,640.78, 72,970.92 and 15,363.94 is: 23,048.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,640.78 : 72,970.92 = 15,363.94 : x
  2. Step 2: Convert to fraction form
    48,640.78/72,970.92 = 15,363.94/x
  3. Step 3: Cross multiply
    48,640.78x = 72,970.92 × 15,363.94
  4. Step 4: Simplify right side
    48,640.78x = 1,121,120,836.62
  5. Step 5: Solve for x
    x = 1,121,120,836.62/48,640.78
  6. Step 6: Final answer
    x = 23,048.99

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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.