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Finding the Fourth Proportional to 72,904.68, 100,605.60 and 41,079.96

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Solution

The fourth proportional to 72,904.68, 100,605.60 and 41,079.96 is: 56,688.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,904.68 : 100,605.60 = 41,079.96 : x
  2. Step 2: Convert to fraction form
    72,904.68/100,605.60 = 41,079.96/x
  3. Step 3: Cross multiply
    72,904.68x = 100,605.60 × 41,079.96
  4. Step 4: Simplify right side
    72,904.68x = 4,132,874,023.78
  5. Step 5: Solve for x
    x = 4,132,874,023.78/72,904.68
  6. Step 6: Final answer
    x = 56,688.73

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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.