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Finding the Fourth Proportional to 10,995.30, 16,474.05 and 5,139.90

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Solution

The fourth proportional to 10,995.30, 16,474.05 and 5,139.90 is: 7,701.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995.30 : 16,474.05 = 5,139.90 : x
  2. Step 2: Convert to fraction form
    10,995.30/16,474.05 = 5,139.90/x
  3. Step 3: Cross multiply
    10,995.30x = 16,474.05 × 5,139.90
  4. Step 4: Simplify right side
    10,995.30x = 84,674,969.60
  5. Step 5: Solve for x
    x = 84,674,969.60/10,995.30
  6. Step 6: Final answer
    x = 7,701.01

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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.