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Finding the Fourth Proportional to 15,772.30, 23,636.85 and 12,856.30

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Solution

The fourth proportional to 15,772.30, 23,636.85 and 12,856.30 is: 19,266.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,772.30 : 23,636.85 = 12,856.30 : x
  2. Step 2: Convert to fraction form
    15,772.30/23,636.85 = 12,856.30/x
  3. Step 3: Cross multiply
    15,772.30x = 23,636.85 × 12,856.30
  4. Step 4: Simplify right side
    15,772.30x = 303,882,434.66
  5. Step 5: Solve for x
    x = 303,882,434.66/15,772.30
  6. Step 6: Final answer
    x = 19,266.84

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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.