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Finding the Fourth Proportional to 14,693.47, 20,277.34 and 7,979.38

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Solution

The fourth proportional to 14,693.47, 20,277.34 and 7,979.38 is: 11,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,693.47 : 20,277.34 = 7,979.38 : x
  2. Step 2: Convert to fraction form
    14,693.47/20,277.34 = 7,979.38/x
  3. Step 3: Cross multiply
    14,693.47x = 20,277.34 × 7,979.38
  4. Step 4: Simplify right side
    14,693.47x = 161,800,530.61
  5. Step 5: Solve for x
    x = 161,800,530.61/14,693.47
  6. Step 6: Final answer
    x = 11,011.73

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Double scale
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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.