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Finding the Fourth Proportional to 74,749.71, 103,599.87 and 73,350.03

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Solution

The fourth proportional to 74,749.71, 103,599.87 and 73,350.03 is: 101,659.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,749.71 : 103,599.87 = 73,350.03 : x
  2. Step 2: Convert to fraction form
    74,749.71/103,599.87 = 73,350.03/x
  3. Step 3: Cross multiply
    74,749.71x = 103,599.87 × 73,350.03
  4. Step 4: Simplify right side
    74,749.71x = 7,599,053,572.50
  5. Step 5: Solve for x
    x = 7,599,053,572.50/74,749.71
  6. Step 6: Final answer
    x = 101,659.97

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.