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Finding the Fourth Proportional to 18,348.96, 25,321.20 and 9,965.52

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Solution

The fourth proportional to 18,348.96, 25,321.20 and 9,965.52 is: 13,752.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.96 : 25,321.20 = 9,965.52 : x
  2. Step 2: Convert to fraction form
    18,348.96/25,321.20 = 9,965.52/x
  3. Step 3: Cross multiply
    18,348.96x = 25,321.20 × 9,965.52
  4. Step 4: Simplify right side
    18,348.96x = 252,338,925.02
  5. Step 5: Solve for x
    x = 252,338,925.02/18,348.96
  6. Step 6: Final answer
    x = 13,752.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.