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Finding the Fourth Proportional to 48,212.80, 72,319.20 and 17,051.20

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Solution

The fourth proportional to 48,212.80, 72,319.20 and 17,051.20 is: 25,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,212.80 : 72,319.20 = 17,051.20 : x
  2. Step 2: Convert to fraction form
    48,212.80/72,319.20 = 17,051.20/x
  3. Step 3: Cross multiply
    48,212.80x = 72,319.20 × 17,051.20
  4. Step 4: Simplify right side
    48,212.80x = 1,233,129,143.04
  5. Step 5: Solve for x
    x = 1,233,129,143.04/48,212.80
  6. Step 6: Final answer
    x = 25,576.80

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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.