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Finding the Fourth Proportional to 19,497.66, 26,928.63 and 13,199.10

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Solution

The fourth proportional to 19,497.66, 26,928.63 and 13,199.10 is: 18,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,497.66 : 26,928.63 = 13,199.10 : x
  2. Step 2: Convert to fraction form
    19,497.66/26,928.63 = 13,199.10/x
  3. Step 3: Cross multiply
    19,497.66x = 26,928.63 × 13,199.10
  4. Step 4: Simplify right side
    19,497.66x = 355,433,680.23
  5. Step 5: Solve for x
    x = 355,433,680.23/19,497.66
  6. Step 6: Final answer
    x = 18,229.56

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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.