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Finding the Fourth Proportional to 143,812.97, 198,462.08 and 86,452.92

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Solution

The fourth proportional to 143,812.97, 198,462.08 and 86,452.92 is: 119,305.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,812.97 : 198,462.08 = 86,452.92 : x
  2. Step 2: Convert to fraction form
    143,812.97/198,462.08 = 86,452.92/x
  3. Step 3: Cross multiply
    143,812.97x = 198,462.08 × 86,452.92
  4. Step 4: Simplify right side
    143,812.97x = 17,157,626,541.41
  5. Step 5: Solve for x
    x = 17,157,626,541.41/143,812.97
  6. Step 6: Final answer
    x = 119,305.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.