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Finding the Fourth Proportional to 22,486.78, 33,693.26 and 7,687.62

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Solution

The fourth proportional to 22,486.78, 33,693.26 and 7,687.62 is: 11,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,486.78 : 33,693.26 = 7,687.62 : x
  2. Step 2: Convert to fraction form
    22,486.78/33,693.26 = 7,687.62/x
  3. Step 3: Cross multiply
    22,486.78x = 33,693.26 × 7,687.62
  4. Step 4: Simplify right side
    22,486.78x = 259,020,941.00
  5. Step 5: Solve for x
    x = 259,020,941.00/22,486.78
  6. Step 6: Final answer
    x = 11,518.81

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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.