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Finding the Fourth Proportional to 75,571.80, 113,228.10 and 36,043.80

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Solution

The fourth proportional to 75,571.80, 113,228.10 and 36,043.80 is: 54,003.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,571.80 : 113,228.10 = 36,043.80 : x
  2. Step 2: Convert to fraction form
    75,571.80/113,228.10 = 36,043.80/x
  3. Step 3: Cross multiply
    75,571.80x = 113,228.10 × 36,043.80
  4. Step 4: Simplify right side
    75,571.80x = 4,081,170,990.78
  5. Step 5: Solve for x
    x = 4,081,170,990.78/75,571.80
  6. Step 6: Final answer
    x = 54,003.89

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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.