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Finding the Fourth Proportional to 40,908.80, 61,363.20 and 35,724.80

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Solution

The fourth proportional to 40,908.80, 61,363.20 and 35,724.80 is: 53,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,908.80 : 61,363.20 = 35,724.80 : x
  2. Step 2: Convert to fraction form
    40,908.80/61,363.20 = 35,724.80/x
  3. Step 3: Cross multiply
    40,908.80x = 61,363.20 × 35,724.80
  4. Step 4: Simplify right side
    40,908.80x = 2,192,188,047.36
  5. Step 5: Solve for x
    x = 2,192,188,047.36/40,908.80
  6. Step 6: Final answer
    x = 53,587.20

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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.