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Finding the Fourth Proportional to 14,979.11, 20,679.58 and 9,950.18

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Solution

The fourth proportional to 14,979.11, 20,679.58 and 9,950.18 is: 13,736.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979.11 : 20,679.58 = 9,950.18 : x
  2. Step 2: Convert to fraction form
    14,979.11/20,679.58 = 9,950.18/x
  3. Step 3: Cross multiply
    14,979.11x = 20,679.58 × 9,950.18
  4. Step 4: Simplify right side
    14,979.11x = 205,765,570.15
  5. Step 5: Solve for x
    x = 205,765,570.15/14,979.11
  6. Step 6: Final answer
    x = 13,736.84

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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.