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Finding the Fourth Proportional to 14,161.52, 19,542.45 and 7,788.11

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Solution

The fourth proportional to 14,161.52, 19,542.45 and 7,788.11 is: 10,747.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,161.52 : 19,542.45 = 7,788.11 : x
  2. Step 2: Convert to fraction form
    14,161.52/19,542.45 = 7,788.11/x
  3. Step 3: Cross multiply
    14,161.52x = 19,542.45 × 7,788.11
  4. Step 4: Simplify right side
    14,161.52x = 152,198,652.56
  5. Step 5: Solve for x
    x = 152,198,652.56/14,161.52
  6. Step 6: Final answer
    x = 10,747.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.