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Finding the Fourth Proportional to 73,761.91, 110,686.62 and 69,091.76

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Solution

The fourth proportional to 73,761.91, 110,686.62 and 69,091.76 is: 103,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,761.91 : 110,686.62 = 69,091.76 : x
  2. Step 2: Convert to fraction form
    73,761.91/110,686.62 = 69,091.76/x
  3. Step 3: Cross multiply
    73,761.91x = 110,686.62 × 69,091.76
  4. Step 4: Simplify right side
    73,761.91x = 7,647,533,384.25
  5. Step 5: Solve for x
    x = 7,647,533,384.25/73,761.91
  6. Step 6: Final answer
    x = 103,678.62

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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.