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Finding the Fourth Proportional to 85,207.86, 127,807.11 and 26,043.49

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Solution

The fourth proportional to 85,207.86, 127,807.11 and 26,043.49 is: 39,063.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,207.86 : 127,807.11 = 26,043.49 : x
  2. Step 2: Convert to fraction form
    85,207.86/127,807.11 = 26,043.49/x
  3. Step 3: Cross multiply
    85,207.86x = 127,807.11 × 26,043.49
  4. Step 4: Simplify right side
    85,207.86x = 3,328,543,191.21
  5. Step 5: Solve for x
    x = 3,328,543,191.21/85,207.86
  6. Step 6: Final answer
    x = 39,063.80

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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.