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Finding the Fourth Proportional to 65,608.18, 90,582.86 and 50,474.14

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Solution

The fourth proportional to 65,608.18, 90,582.86 and 50,474.14 is: 69,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,608.18 : 90,582.86 = 50,474.14 : x
  2. Step 2: Convert to fraction form
    65,608.18/90,582.86 = 50,474.14/x
  3. Step 3: Cross multiply
    65,608.18x = 90,582.86 × 50,474.14
  4. Step 4: Simplify right side
    65,608.18x = 4,572,091,251.96
  5. Step 5: Solve for x
    x = 4,572,091,251.96/65,608.18
  6. Step 6: Final answer
    x = 69,687.83

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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.