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Finding the Fourth Proportional to 19,240.40, 28,863.30 and 6,091.40

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Solution

The fourth proportional to 19,240.40, 28,863.30 and 6,091.40 is: 9,137.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,240.40 : 28,863.30 = 6,091.40 : x
  2. Step 2: Convert to fraction form
    19,240.40/28,863.30 = 6,091.40/x
  3. Step 3: Cross multiply
    19,240.40x = 28,863.30 × 6,091.40
  4. Step 4: Simplify right side
    19,240.40x = 175,817,905.62
  5. Step 5: Solve for x
    x = 175,817,905.62/19,240.40
  6. Step 6: Final answer
    x = 9,137.95

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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.