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Finding the Fourth Proportional to 19,191.18, 28,786.08 and 6,711.18

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Solution

The fourth proportional to 19,191.18, 28,786.08 and 6,711.18 is: 10,066.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.18 : 28,786.08 = 6,711.18 : x
  2. Step 2: Convert to fraction form
    19,191.18/28,786.08 = 6,711.18/x
  3. Step 3: Cross multiply
    19,191.18x = 28,786.08 × 6,711.18
  4. Step 4: Simplify right side
    19,191.18x = 193,188,564.37
  5. Step 5: Solve for x
    x = 193,188,564.37/19,191.18
  6. Step 6: Final answer
    x = 10,066.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.