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Finding the Fourth Proportional to 18,690.73, 28,035.48 and 7,594.13

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Solution

The fourth proportional to 18,690.73, 28,035.48 and 7,594.13 is: 11,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,690.73 : 28,035.48 = 7,594.13 : x
  2. Step 2: Convert to fraction form
    18,690.73/28,035.48 = 7,594.13/x
  3. Step 3: Cross multiply
    18,690.73x = 28,035.48 × 7,594.13
  4. Step 4: Simplify right side
    18,690.73x = 212,905,079.73
  5. Step 5: Solve for x
    x = 212,905,079.73/18,690.73
  6. Step 6: Final answer
    x = 11,390.95

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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.