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Finding the Fourth Proportional to 71,610.20, 107,415.30 and 36,618.20

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Solution

The fourth proportional to 71,610.20, 107,415.30 and 36,618.20 is: 54,927.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,610.20 : 107,415.30 = 36,618.20 : x
  2. Step 2: Convert to fraction form
    71,610.20/107,415.30 = 36,618.20/x
  3. Step 3: Cross multiply
    71,610.20x = 107,415.30 × 36,618.20
  4. Step 4: Simplify right side
    71,610.20x = 3,933,354,938.46
  5. Step 5: Solve for x
    x = 3,933,354,938.46/71,610.20
  6. Step 6: Final answer
    x = 54,927.30

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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.