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Finding the Fourth Proportional to 21,851.92, 32,738.98 and 9,173.80

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Solution

The fourth proportional to 21,851.92, 32,738.98 and 9,173.80 is: 13,744.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851.92 : 32,738.98 = 9,173.80 : x
  2. Step 2: Convert to fraction form
    21,851.92/32,738.98 = 9,173.80/x
  3. Step 3: Cross multiply
    21,851.92x = 32,738.98 × 9,173.80
  4. Step 4: Simplify right side
    21,851.92x = 300,340,854.72
  5. Step 5: Solve for x
    x = 300,340,854.72/21,851.92
  6. Step 6: Final answer
    x = 13,744.37

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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.