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Finding the Fourth Proportional to 143,813.16, 215,739.18 and 135,065.16

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Solution

The fourth proportional to 143,813.16, 215,739.18 and 135,065.16 is: 202,616.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,813.16 : 215,739.18 = 135,065.16 : x
  2. Step 2: Convert to fraction form
    143,813.16/215,739.18 = 135,065.16/x
  3. Step 3: Cross multiply
    143,813.16x = 215,739.18 × 135,065.16
  4. Step 4: Simplify right side
    143,813.16x = 29,138,846,864.97
  5. Step 5: Solve for x
    x = 29,138,846,864.97/143,813.16
  6. Step 6: Final answer
    x = 202,616.00

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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.