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Finding the Fourth Proportional to 18,447.50, 25,458.09 and 10,064.54

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Solution

The fourth proportional to 18,447.50, 25,458.09 and 10,064.54 is: 13,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.50 : 25,458.09 = 10,064.54 : x
  2. Step 2: Convert to fraction form
    18,447.50/25,458.09 = 10,064.54/x
  3. Step 3: Cross multiply
    18,447.50x = 25,458.09 × 10,064.54
  4. Step 4: Simplify right side
    18,447.50x = 256,223,965.13
  5. Step 5: Solve for x
    x = 256,223,965.13/18,447.50
  6. Step 6: Final answer
    x = 13,889.36

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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.