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Finding the Fourth Proportional to 18,613.68, 25,660.44 and 14,803.44

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Solution

The fourth proportional to 18,613.68, 25,660.44 and 14,803.44 is: 20,407.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.68 : 25,660.44 = 14,803.44 : x
  2. Step 2: Convert to fraction form
    18,613.68/25,660.44 = 14,803.44/x
  3. Step 3: Cross multiply
    18,613.68x = 25,660.44 × 14,803.44
  4. Step 4: Simplify right side
    18,613.68x = 379,862,783.91
  5. Step 5: Solve for x
    x = 379,862,783.91/18,613.68
  6. Step 6: Final answer
    x = 20,407.72

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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.