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Finding the Fourth Proportional to 136,079.66, 187,796.33 and 75,651.30

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Solution

The fourth proportional to 136,079.66, 187,796.33 and 75,651.30 is: 104,402.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,079.66 : 187,796.33 = 75,651.30 : x
  2. Step 2: Convert to fraction form
    136,079.66/187,796.33 = 75,651.30/x
  3. Step 3: Cross multiply
    136,079.66x = 187,796.33 × 75,651.30
  4. Step 4: Simplify right side
    136,079.66x = 14,207,036,969.22
  5. Step 5: Solve for x
    x = 14,207,036,969.22/136,079.66
  6. Step 6: Final answer
    x = 104,402.36

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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.