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Finding the Fourth Proportional to 108,267.12, 149,311.84 and 67,984.64

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Solution

The fourth proportional to 108,267.12, 149,311.84 and 67,984.64 is: 93,758.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,267.12 : 149,311.84 = 67,984.64 : x
  2. Step 2: Convert to fraction form
    108,267.12/149,311.84 = 67,984.64/x
  3. Step 3: Cross multiply
    108,267.12x = 149,311.84 × 67,984.64
  4. Step 4: Simplify right side
    108,267.12x = 10,150,911,690.14
  5. Step 5: Solve for x
    x = 10,150,911,690.14/108,267.12
  6. Step 6: Final answer
    x = 93,758.03

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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.