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Finding the Fourth Proportional to 21,888.72, 32,813.60 and 8,034.48

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Solution

The fourth proportional to 21,888.72, 32,813.60 and 8,034.48 is: 12,044.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.72 : 32,813.60 = 8,034.48 : x
  2. Step 2: Convert to fraction form
    21,888.72/32,813.60 = 8,034.48/x
  3. Step 3: Cross multiply
    21,888.72x = 32,813.60 × 8,034.48
  4. Step 4: Simplify right side
    21,888.72x = 263,640,212.93
  5. Step 5: Solve for x
    x = 263,640,212.93/21,888.72
  6. Step 6: Final answer
    x = 12,044.57

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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.