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Finding the Fourth Proportional to 18,267.50, 25,209.18 and 10,201.11

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Solution

The fourth proportional to 18,267.50, 25,209.18 and 10,201.11 is: 14,077.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,267.50 : 25,209.18 = 10,201.11 : x
  2. Step 2: Convert to fraction form
    18,267.50/25,209.18 = 10,201.11/x
  3. Step 3: Cross multiply
    18,267.50x = 25,209.18 × 10,201.11
  4. Step 4: Simplify right side
    18,267.50x = 257,161,618.19
  5. Step 5: Solve for x
    x = 257,161,618.19/18,267.50
  6. Step 6: Final answer
    x = 14,077.55

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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.