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Finding the Fourth Proportional to 136,881.81, 205,687.20 and 73,750.41

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Solution

The fourth proportional to 136,881.81, 205,687.20 and 73,750.41 is: 110,822.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,881.81 : 205,687.20 = 73,750.41 : x
  2. Step 2: Convert to fraction form
    136,881.81/205,687.20 = 73,750.41/x
  3. Step 3: Cross multiply
    136,881.81x = 205,687.20 × 73,750.41
  4. Step 4: Simplify right side
    136,881.81x = 15,169,515,331.75
  5. Step 5: Solve for x
    x = 15,169,515,331.75/136,881.81
  6. Step 6: Final answer
    x = 110,822.00

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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.