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Finding the Fourth Proportional to 19,217.34, 28,815.99 and 7,367.58

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Solution

The fourth proportional to 19,217.34, 28,815.99 and 7,367.58 is: 11,047.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,217.34 : 28,815.99 = 7,367.58 : x
  2. Step 2: Convert to fraction form
    19,217.34/28,815.99 = 7,367.58/x
  3. Step 3: Cross multiply
    19,217.34x = 28,815.99 × 7,367.58
  4. Step 4: Simplify right side
    19,217.34x = 212,304,111.60
  5. Step 5: Solve for x
    x = 212,304,111.60/19,217.34
  6. Step 6: Final answer
    x = 11,047.53

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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.