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Finding the Fourth Proportional to 113,992.50, 170,992.22 and 39,111.58

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Solution

The fourth proportional to 113,992.50, 170,992.22 and 39,111.58 is: 58,668.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,992.50 : 170,992.22 = 39,111.58 : x
  2. Step 2: Convert to fraction form
    113,992.50/170,992.22 = 39,111.58/x
  3. Step 3: Cross multiply
    113,992.50x = 170,992.22 × 39,111.58
  4. Step 4: Simplify right side
    113,992.50x = 6,687,775,891.91
  5. Step 5: Solve for x
    x = 6,687,775,891.91/113,992.50
  6. Step 6: Final answer
    x = 58,668.56

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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.