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Finding the Fourth Proportional to 65,433.66, 98,166.15 and 21,064.56

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Solution

The fourth proportional to 65,433.66, 98,166.15 and 21,064.56 is: 31,601.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,433.66 : 98,166.15 = 21,064.56 : x
  2. Step 2: Convert to fraction form
    65,433.66/98,166.15 = 21,064.56/x
  3. Step 3: Cross multiply
    65,433.66x = 98,166.15 × 21,064.56
  4. Step 4: Simplify right side
    65,433.66x = 2,067,826,756.64
  5. Step 5: Solve for x
    x = 2,067,826,756.64/65,433.66
  6. Step 6: Final answer
    x = 31,601.88

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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.