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Finding the Fourth Proportional to 71,479.80, 107,187.30 and 27,091.80

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Solution

The fourth proportional to 71,479.80, 107,187.30 and 27,091.80 is: 40,625.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,479.80 : 107,187.30 = 27,091.80 : x
  2. Step 2: Convert to fraction form
    71,479.80/107,187.30 = 27,091.80/x
  3. Step 3: Cross multiply
    71,479.80x = 107,187.30 × 27,091.80
  4. Step 4: Simplify right side
    71,479.80x = 2,903,896,894.14
  5. Step 5: Solve for x
    x = 2,903,896,894.14/71,479.80
  6. Step 6: Final answer
    x = 40,625.42

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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.