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Finding the Fourth Proportional to 14,979.71, 20,759.38 and 14,768.30

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Solution

The fourth proportional to 14,979.71, 20,759.38 and 14,768.30 is: 20,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979.71 : 20,759.38 = 14,768.30 : x
  2. Step 2: Convert to fraction form
    14,979.71/20,759.38 = 14,768.30/x
  3. Step 3: Cross multiply
    14,979.71x = 20,759.38 × 14,768.30
  4. Step 4: Simplify right side
    14,979.71x = 306,580,766.63
  5. Step 5: Solve for x
    x = 306,580,766.63/14,979.71
  6. Step 6: Final answer
    x = 20,466.40

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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.