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Finding the Fourth Proportional to 19,195.74, 28,787.17 and 7,346.75

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Solution

The fourth proportional to 19,195.74, 28,787.17 and 7,346.75 is: 11,017.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,195.74 : 28,787.17 = 7,346.75 : x
  2. Step 2: Convert to fraction form
    19,195.74/28,787.17 = 7,346.75/x
  3. Step 3: Cross multiply
    19,195.74x = 28,787.17 × 7,346.75
  4. Step 4: Simplify right side
    19,195.74x = 211,492,141.20
  5. Step 5: Solve for x
    x = 211,492,141.20/19,195.74
  6. Step 6: Final answer
    x = 11,017.66

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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.