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Finding the Fourth Proportional to 131,486.80, 197,230.20 and 124,229.20

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Solution

The fourth proportional to 131,486.80, 197,230.20 and 124,229.20 is: 186,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,486.80 : 197,230.20 = 124,229.20 : x
  2. Step 2: Convert to fraction form
    131,486.80/197,230.20 = 124,229.20/x
  3. Step 3: Cross multiply
    131,486.80x = 197,230.20 × 124,229.20
  4. Step 4: Simplify right side
    131,486.80x = 24,501,749,961.84
  5. Step 5: Solve for x
    x = 24,501,749,961.84/131,486.80
  6. Step 6: Final answer
    x = 186,343.80

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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.