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Finding the Fourth Proportional to 15,162.77, 20,915.15 and 10,847.90

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Solution

The fourth proportional to 15,162.77, 20,915.15 and 10,847.90 is: 14,963.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.77 : 20,915.15 = 10,847.90 : x
  2. Step 2: Convert to fraction form
    15,162.77/20,915.15 = 10,847.90/x
  3. Step 3: Cross multiply
    15,162.77x = 20,915.15 × 10,847.90
  4. Step 4: Simplify right side
    15,162.77x = 226,885,296.87
  5. Step 5: Solve for x
    x = 226,885,296.87/15,162.77
  6. Step 6: Final answer
    x = 14,963.32

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.