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Finding the Fourth Proportional to 18,309.70, 25,267.42 and 9,926.20

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Solution

The fourth proportional to 18,309.70, 25,267.42 and 9,926.20 is: 13,698.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,309.70 : 25,267.42 = 9,926.20 : x
  2. Step 2: Convert to fraction form
    18,309.70/25,267.42 = 9,926.20/x
  3. Step 3: Cross multiply
    18,309.70x = 25,267.42 × 9,926.20
  4. Step 4: Simplify right side
    18,309.70x = 250,809,464.40
  5. Step 5: Solve for x
    x = 250,809,464.40/18,309.70
  6. Step 6: Final answer
    x = 13,698.17

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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.