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Finding the Fourth Proportional to 65,859.65, 90,864.87 and 41,994.02

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Solution

The fourth proportional to 65,859.65, 90,864.87 and 41,994.02 is: 57,938.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,859.65 : 90,864.87 = 41,994.02 : x
  2. Step 2: Convert to fraction form
    65,859.65/90,864.87 = 41,994.02/x
  3. Step 3: Cross multiply
    65,859.65x = 90,864.87 × 41,994.02
  4. Step 4: Simplify right side
    65,859.65x = 3,815,780,713.75
  5. Step 5: Solve for x
    x = 3,815,780,713.75/65,859.65
  6. Step 6: Final answer
    x = 57,938.07

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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.