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Finding the Fourth Proportional to 18,447.75, 25,458.03 and 10,064.25

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Solution

The fourth proportional to 18,447.75, 25,458.03 and 10,064.25 is: 13,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.75 : 25,458.03 = 10,064.25 : x
  2. Step 2: Convert to fraction form
    18,447.75/25,458.03 = 10,064.25/x
  3. Step 3: Cross multiply
    18,447.75x = 25,458.03 × 10,064.25
  4. Step 4: Simplify right side
    18,447.75x = 256,215,978.43
  5. Step 5: Solve for x
    x = 256,215,978.43/18,447.75
  6. Step 6: Final answer
    x = 13,888.74

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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.