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Finding the Fourth Proportional to 74,296.68, 110,859.91 and 69,776.43

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Solution

The fourth proportional to 74,296.68, 110,859.91 and 69,776.43 is: 104,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,296.68 : 110,859.91 = 69,776.43 : x
  2. Step 2: Convert to fraction form
    74,296.68/110,859.91 = 69,776.43/x
  3. Step 3: Cross multiply
    74,296.68x = 110,859.91 × 69,776.43
  4. Step 4: Simplify right side
    74,296.68x = 7,735,408,575.48
  5. Step 5: Solve for x
    x = 7,735,408,575.48/74,296.68
  6. Step 6: Final answer
    x = 104,115.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.