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Finding the Fourth Proportional to 66,886.52, 100,328.76 and 16,286.02

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Solution

The fourth proportional to 66,886.52, 100,328.76 and 16,286.02 is: 24,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,886.52 : 100,328.76 = 16,286.02 : x
  2. Step 2: Convert to fraction form
    66,886.52/100,328.76 = 16,286.02/x
  3. Step 3: Cross multiply
    66,886.52x = 100,328.76 × 16,286.02
  4. Step 4: Simplify right side
    66,886.52x = 1,633,956,191.94
  5. Step 5: Solve for x
    x = 1,633,956,191.94/66,886.52
  6. Step 6: Final answer
    x = 24,428.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.