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Finding the Fourth Proportional to 87,812.10, 131,426.55 and 87,812.10

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Solution

The fourth proportional to 87,812.10, 131,426.55 and 87,812.10 is: 131,426.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,812.10 : 131,426.55 = 87,812.10 : x
  2. Step 2: Convert to fraction form
    87,812.10/131,426.55 = 87,812.10/x
  3. Step 3: Cross multiply
    87,812.10x = 131,426.55 × 87,812.10
  4. Step 4: Simplify right side
    87,812.10x = 11,540,841,351.26
  5. Step 5: Solve for x
    x = 11,540,841,351.26/87,812.10
  6. Step 6: Final answer
    x = 131,426.55

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1.5x scale

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.