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Finding the Fourth Proportional to 18,762.10, 25,888.44 and 11,211.46

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Solution

The fourth proportional to 18,762.10, 25,888.44 and 11,211.46 is: 15,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,762.10 : 25,888.44 = 11,211.46 : x
  2. Step 2: Convert to fraction form
    18,762.10/25,888.44 = 11,211.46/x
  3. Step 3: Cross multiply
    18,762.10x = 25,888.44 × 11,211.46
  4. Step 4: Simplify right side
    18,762.10x = 290,247,209.52
  5. Step 5: Solve for x
    x = 290,247,209.52/18,762.10
  6. Step 6: Final answer
    x = 15,469.87

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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.