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Finding the Fourth Proportional to 107,168.40, 160,719.77 and 74,100.96

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Solution

The fourth proportional to 107,168.40, 160,719.77 and 74,100.96 is: 111,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,168.40 : 160,719.77 = 74,100.96 : x
  2. Step 2: Convert to fraction form
    107,168.40/160,719.77 = 74,100.96/x
  3. Step 3: Cross multiply
    107,168.40x = 160,719.77 × 74,100.96
  4. Step 4: Simplify right side
    107,168.40x = 11,909,488,660.93
  5. Step 5: Solve for x
    x = 11,909,488,660.93/107,168.40
  6. Step 6: Final answer
    x = 111,128.74

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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.