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Finding the Fourth Proportional to 12,195.76, 16,818.48 and 7,416.52

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Solution

The fourth proportional to 12,195.76, 16,818.48 and 7,416.52 is: 10,227.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.76 : 16,818.48 = 7,416.52 : x
  2. Step 2: Convert to fraction form
    12,195.76/16,818.48 = 7,416.52/x
  3. Step 3: Cross multiply
    12,195.76x = 16,818.48 × 7,416.52
  4. Step 4: Simplify right side
    12,195.76x = 124,734,593.29
  5. Step 5: Solve for x
    x = 124,734,593.29/12,195.76
  6. Step 6: Final answer
    x = 10,227.70

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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.