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Finding the Fourth Proportional to 36,991.52, 55,487.30 and 12,367.52

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Solution

The fourth proportional to 36,991.52, 55,487.30 and 12,367.52 is: 18,551.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,991.52 : 55,487.30 = 12,367.52 : x
  2. Step 2: Convert to fraction form
    36,991.52/55,487.30 = 12,367.52/x
  3. Step 3: Cross multiply
    36,991.52x = 55,487.30 × 12,367.52
  4. Step 4: Simplify right side
    36,991.52x = 686,240,292.50
  5. Step 5: Solve for x
    x = 686,240,292.50/36,991.52
  6. Step 6: Final answer
    x = 18,551.29

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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.