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Finding the Fourth Proportional to 72,817.52, 100,519.15 and 48,958.03

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Solution

The fourth proportional to 72,817.52, 100,519.15 and 48,958.03 is: 67,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,817.52 : 100,519.15 = 48,958.03 : x
  2. Step 2: Convert to fraction form
    72,817.52/100,519.15 = 48,958.03/x
  3. Step 3: Cross multiply
    72,817.52x = 100,519.15 × 48,958.03
  4. Step 4: Simplify right side
    72,817.52x = 4,921,219,058.68
  5. Step 5: Solve for x
    x = 4,921,219,058.68/72,817.52
  6. Step 6: Final answer
    x = 67,582.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.