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Finding the Fourth Proportional to 72,819.01, 109,228.92 and 25,433.86

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Solution

The fourth proportional to 72,819.01, 109,228.92 and 25,433.86 is: 38,150.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,819.01 : 109,228.92 = 25,433.86 : x
  2. Step 2: Convert to fraction form
    72,819.01/109,228.92 = 25,433.86/x
  3. Step 3: Cross multiply
    72,819.01x = 109,228.92 × 25,433.86
  4. Step 4: Simplify right side
    72,819.01x = 2,778,113,059.23
  5. Step 5: Solve for x
    x = 2,778,113,059.23/72,819.01
  6. Step 6: Final answer
    x = 38,150.93

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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.