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Finding the Fourth Proportional to 72,248.80, 108,373.20 and 48,629.20

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Solution

The fourth proportional to 72,248.80, 108,373.20 and 48,629.20 is: 72,943.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.80 : 108,373.20 = 48,629.20 : x
  2. Step 2: Convert to fraction form
    72,248.80/108,373.20 = 48,629.20/x
  3. Step 3: Cross multiply
    72,248.80x = 108,373.20 × 48,629.20
  4. Step 4: Simplify right side
    72,248.80x = 5,270,102,017.44
  5. Step 5: Solve for x
    x = 5,270,102,017.44/72,248.80
  6. Step 6: Final answer
    x = 72,943.80

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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.