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Finding the Fourth Proportional to 65,859.15, 90,864.18 and 41,993.52

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Solution

The fourth proportional to 65,859.15, 90,864.18 and 41,993.52 is: 57,937.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,859.15 : 90,864.18 = 41,993.52 : x
  2. Step 2: Convert to fraction form
    65,859.15/90,864.18 = 41,993.52/x
  3. Step 3: Cross multiply
    65,859.15x = 90,864.18 × 41,993.52
  4. Step 4: Simplify right side
    65,859.15x = 3,815,706,760.11
  5. Step 5: Solve for x
    x = 3,815,706,760.11/65,859.15
  6. Step 6: Final answer
    x = 57,937.38

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1.5x scale

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.