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Finding the Fourth Proportional to 14,593.71, 20,220.66 and 14,278.42

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Solution

The fourth proportional to 14,593.71, 20,220.66 and 14,278.42 is: 19,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,593.71 : 20,220.66 = 14,278.42 : x
  2. Step 2: Convert to fraction form
    14,593.71/20,220.66 = 14,278.42/x
  3. Step 3: Cross multiply
    14,593.71x = 20,220.66 × 14,278.42
  4. Step 4: Simplify right side
    14,593.71x = 288,719,076.16
  5. Step 5: Solve for x
    x = 288,719,076.16/14,593.71
  6. Step 6: Final answer
    x = 19,783.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.