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Finding the Fourth Proportional to 60,640.50, 90,849.92 and 43,959.16

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Solution

The fourth proportional to 60,640.50, 90,849.92 and 43,959.16 is: 65,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,640.50 : 90,849.92 = 43,959.16 : x
  2. Step 2: Convert to fraction form
    60,640.50/90,849.92 = 43,959.16/x
  3. Step 3: Cross multiply
    60,640.50x = 90,849.92 × 43,959.16
  4. Step 4: Simplify right side
    60,640.50x = 3,993,686,169.27
  5. Step 5: Solve for x
    x = 3,993,686,169.27/60,640.50
  6. Step 6: Final answer
    x = 65,858.40

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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.