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Finding the Fourth Proportional to 19,251.40, 28,877.10 and 14,067.40

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Solution

The fourth proportional to 19,251.40, 28,877.10 and 14,067.40 is: 21,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.40 : 28,877.10 = 14,067.40 : x
  2. Step 2: Convert to fraction form
    19,251.40/28,877.10 = 14,067.40/x
  3. Step 3: Cross multiply
    19,251.40x = 28,877.10 × 14,067.40
  4. Step 4: Simplify right side
    19,251.40x = 406,225,716.54
  5. Step 5: Solve for x
    x = 406,225,716.54/19,251.40
  6. Step 6: Final answer
    x = 21,101.10

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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.