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Finding the Fourth Proportional to 14,693.70, 20,277.35 and 7,979.44

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Solution

The fourth proportional to 14,693.70, 20,277.35 and 7,979.44 is: 11,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,693.70 : 20,277.35 = 7,979.44 : x
  2. Step 2: Convert to fraction form
    14,693.70/20,277.35 = 7,979.44/x
  3. Step 3: Cross multiply
    14,693.70x = 20,277.35 × 7,979.44
  4. Step 4: Simplify right side
    14,693.70x = 161,801,897.68
  5. Step 5: Solve for x
    x = 161,801,897.68/14,693.70
  6. Step 6: Final answer
    x = 11,011.65

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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.