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Finding the Fourth Proportional to 71,656.38, 107,485.65 and 27,285.59

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Solution

The fourth proportional to 71,656.38, 107,485.65 and 27,285.59 is: 40,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,656.38 : 107,485.65 = 27,285.59 : x
  2. Step 2: Convert to fraction form
    71,656.38/107,485.65 = 27,285.59/x
  3. Step 3: Cross multiply
    71,656.38x = 107,485.65 × 27,285.59
  4. Step 4: Simplify right side
    71,656.38x = 2,932,809,645.50
  5. Step 5: Solve for x
    x = 2,932,809,645.50/71,656.38
  6. Step 6: Final answer
    x = 40,928.80

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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.