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Finding the Fourth Proportional to 18,309.88, 25,267.57 and 9,926.38

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Solution

The fourth proportional to 18,309.88, 25,267.57 and 9,926.38 is: 13,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.88 : 25,267.57 = 9,926.38 : x
  2. Step 2: Convert to fraction form
    18,309.88/25,267.57 = 9,926.38/x
  3. Step 3: Cross multiply
    18,309.88x = 25,267.57 × 9,926.38
  4. Step 4: Simplify right side
    18,309.88x = 250,815,501.50
  5. Step 5: Solve for x
    x = 250,815,501.50/18,309.88
  6. Step 6: Final answer
    x = 13,698.37

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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.