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Finding the Fourth Proportional to 11,695.20, 17,542.80 and 10,237.20

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Solution

The fourth proportional to 11,695.20, 17,542.80 and 10,237.20 is: 15,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.20 : 17,542.80 = 10,237.20 : x
  2. Step 2: Convert to fraction form
    11,695.20/17,542.80 = 10,237.20/x
  3. Step 3: Cross multiply
    11,695.20x = 17,542.80 × 10,237.20
  4. Step 4: Simplify right side
    11,695.20x = 179,589,152.16
  5. Step 5: Solve for x
    x = 179,589,152.16/11,695.20
  6. Step 6: Final answer
    x = 15,355.80

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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.