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Finding the Fourth Proportional to 19,116.95, 28,686.56 and 8,022.78

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Solution

The fourth proportional to 19,116.95, 28,686.56 and 8,022.78 is: 12,038.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116.95 : 28,686.56 = 8,022.78 : x
  2. Step 2: Convert to fraction form
    19,116.95/28,686.56 = 8,022.78/x
  3. Step 3: Cross multiply
    19,116.95x = 28,686.56 × 8,022.78
  4. Step 4: Simplify right side
    19,116.95x = 230,145,919.72
  5. Step 5: Solve for x
    x = 230,145,919.72/19,116.95
  6. Step 6: Final answer
    x = 12,038.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.