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Finding the Fourth Proportional to 14,693.91, 20,277.74 and 7,979.59

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Solution

The fourth proportional to 14,693.91, 20,277.74 and 7,979.59 is: 11,011.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,693.91 : 20,277.74 = 7,979.59 : x
  2. Step 2: Convert to fraction form
    14,693.91/20,277.74 = 7,979.59/x
  3. Step 3: Cross multiply
    14,693.91x = 20,277.74 × 7,979.59
  4. Step 4: Simplify right side
    14,693.91x = 161,808,011.43
  5. Step 5: Solve for x
    x = 161,808,011.43/14,693.91
  6. Step 6: Final answer
    x = 11,011.91

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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.