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Finding the Fourth Proportional to 71,567.30, 107,318.55 and 27,179.30

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Solution

The fourth proportional to 71,567.30, 107,318.55 and 27,179.30 is: 40,756.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,567.30 : 107,318.55 = 27,179.30 : x
  2. Step 2: Convert to fraction form
    71,567.30/107,318.55 = 27,179.30/x
  3. Step 3: Cross multiply
    71,567.30x = 107,318.55 × 27,179.30
  4. Step 4: Simplify right side
    71,567.30x = 2,916,843,066.02
  5. Step 5: Solve for x
    x = 2,916,843,066.02/71,567.30
  6. Step 6: Final answer
    x = 40,756.65

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1.5x scale

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.