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Finding the Fourth Proportional to 75,491.79, 113,237.73 and 74,250.69

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Solution

The fourth proportional to 75,491.79, 113,237.73 and 74,250.69 is: 111,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,491.79 : 113,237.73 = 74,250.69 : x
  2. Step 2: Convert to fraction form
    75,491.79/113,237.73 = 74,250.69/x
  3. Step 3: Cross multiply
    75,491.79x = 113,237.73 × 74,250.69
  4. Step 4: Simplify right side
    75,491.79x = 8,407,979,586.53
  5. Step 5: Solve for x
    x = 8,407,979,586.53/75,491.79
  6. Step 6: Final answer
    x = 111,376.08

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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.