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Finding the Fourth Proportional to 143,694.16, 215,541.24 and 43,854.87

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Solution

The fourth proportional to 143,694.16, 215,541.24 and 43,854.87 is: 65,782.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,694.16 : 215,541.24 = 43,854.87 : x
  2. Step 2: Convert to fraction form
    143,694.16/215,541.24 = 43,854.87/x
  3. Step 3: Cross multiply
    143,694.16x = 215,541.24 × 43,854.87
  4. Step 4: Simplify right side
    143,694.16x = 9,452,533,703.66
  5. Step 5: Solve for x
    x = 9,452,533,703.66/143,694.16
  6. Step 6: Final answer
    x = 65,782.31

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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.