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Finding the Fourth Proportional to 120,276.88, 165,790.88 and 94,742.78

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Solution

The fourth proportional to 120,276.88, 165,790.88 and 94,742.78 is: 130,594.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,276.88 : 165,790.88 = 94,742.78 : x
  2. Step 2: Convert to fraction form
    120,276.88/165,790.88 = 94,742.78/x
  3. Step 3: Cross multiply
    120,276.88x = 165,790.88 × 94,742.78
  4. Step 4: Simplify right side
    120,276.88x = 15,707,488,869.85
  5. Step 5: Solve for x
    x = 15,707,488,869.85/120,276.88
  6. Step 6: Final answer
    x = 130,594.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.