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Finding the Fourth Proportional to 18,575.63, 25,634.72 and 11,123.63

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Solution

The fourth proportional to 18,575.63, 25,634.72 and 11,123.63 is: 15,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,575.63 : 25,634.72 = 11,123.63 : x
  2. Step 2: Convert to fraction form
    18,575.63/25,634.72 = 11,123.63/x
  3. Step 3: Cross multiply
    18,575.63x = 25,634.72 × 11,123.63
  4. Step 4: Simplify right side
    18,575.63x = 285,151,040.07
  5. Step 5: Solve for x
    x = 285,151,040.07/18,575.63
  6. Step 6: Final answer
    x = 15,350.82

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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.