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Finding the Fourth Proportional to 14,693.07, 20,276.87 and 7,979.13

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Solution

The fourth proportional to 14,693.07, 20,276.87 and 7,979.13 is: 11,011.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,693.07 : 20,276.87 = 7,979.13 : x
  2. Step 2: Convert to fraction form
    14,693.07/20,276.87 = 7,979.13/x
  3. Step 3: Cross multiply
    14,693.07x = 20,276.87 × 7,979.13
  4. Step 4: Simplify right side
    14,693.07x = 161,791,781.72
  5. Step 5: Solve for x
    x = 161,791,781.72/14,693.07
  6. Step 6: Final answer
    x = 11,011.43

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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.