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Finding the Fourth Proportional to 131,076.14, 196,581.80 and 56,187.80

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Solution

The fourth proportional to 131,076.14, 196,581.80 and 56,187.80 is: 84,267.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,076.14 : 196,581.80 = 56,187.80 : x
  2. Step 2: Convert to fraction form
    131,076.14/196,581.80 = 56,187.80/x
  3. Step 3: Cross multiply
    131,076.14x = 196,581.80 × 56,187.80
  4. Step 4: Simplify right side
    131,076.14x = 11,045,498,862.04
  5. Step 5: Solve for x
    x = 11,045,498,862.04/131,076.14
  6. Step 6: Final answer
    x = 84,267.81

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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.