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Finding the Fourth Proportional to 66,086.72, 99,129.23 and 16,167.23

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Solution

The fourth proportional to 66,086.72, 99,129.23 and 16,167.23 is: 24,250.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.72 : 99,129.23 = 16,167.23 : x
  2. Step 2: Convert to fraction form
    66,086.72/99,129.23 = 16,167.23/x
  3. Step 3: Cross multiply
    66,086.72x = 99,129.23 × 16,167.23
  4. Step 4: Simplify right side
    66,086.72x = 1,602,645,061.13
  5. Step 5: Solve for x
    x = 1,602,645,061.13/66,086.72
  6. Step 6: Final answer
    x = 24,250.64

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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.