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Finding the Fourth Proportional to 125,041.56, 172,571.22 and 71,339.82

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Solution

The fourth proportional to 125,041.56, 172,571.22 and 71,339.82 is: 98,456.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,041.56 : 172,571.22 = 71,339.82 : x
  2. Step 2: Convert to fraction form
    125,041.56/172,571.22 = 71,339.82/x
  3. Step 3: Cross multiply
    125,041.56x = 172,571.22 × 71,339.82
  4. Step 4: Simplify right side
    125,041.56x = 12,311,199,771.98
  5. Step 5: Solve for x
    x = 12,311,199,771.98/125,041.56
  6. Step 6: Final answer
    x = 98,456.86

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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.