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Finding the Fourth Proportional to 18,352.70, 25,326.51 and 9,969.20

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Solution

The fourth proportional to 18,352.70, 25,326.51 and 9,969.20 is: 13,757.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,352.70 : 25,326.51 = 9,969.20 : x
  2. Step 2: Convert to fraction form
    18,352.70/25,326.51 = 9,969.20/x
  3. Step 3: Cross multiply
    18,352.70x = 25,326.51 × 9,969.20
  4. Step 4: Simplify right side
    18,352.70x = 252,485,043.49
  5. Step 5: Solve for x
    x = 252,485,043.49/18,352.70
  6. Step 6: Final answer
    x = 13,757.38

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Half scale
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Double scale
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Similar ratio
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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.