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Finding the Fourth Proportional to 120,066.08, 165,691.20 and 67,074.08

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Solution

The fourth proportional to 120,066.08, 165,691.20 and 67,074.08 is: 92,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,066.08 : 165,691.20 = 67,074.08 : x
  2. Step 2: Convert to fraction form
    120,066.08/165,691.20 = 67,074.08/x
  3. Step 3: Cross multiply
    120,066.08x = 165,691.20 × 67,074.08
  4. Step 4: Simplify right side
    120,066.08x = 11,113,584,804.10
  5. Step 5: Solve for x
    x = 11,113,584,804.10/120,066.08
  6. Step 6: Final answer
    x = 92,562.24

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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.