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Finding the Fourth Proportional to 143,551.48, 215,338.22 and 43,720.16

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Solution

The fourth proportional to 143,551.48, 215,338.22 and 43,720.16 is: 65,583.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,551.48 : 215,338.22 = 43,720.16 : x
  2. Step 2: Convert to fraction form
    143,551.48/215,338.22 = 43,720.16/x
  3. Step 3: Cross multiply
    143,551.48x = 215,338.22 × 43,720.16
  4. Step 4: Simplify right side
    143,551.48x = 9,414,621,432.52
  5. Step 5: Solve for x
    x = 9,414,621,432.52/143,551.48
  6. Step 6: Final answer
    x = 65,583.59

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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.