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Finding the Fourth Proportional to 11,173.84, 16,760.80 and 5,312.72

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Solution

The fourth proportional to 11,173.84, 16,760.80 and 5,312.72 is: 7,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,173.84 : 16,760.80 = 5,312.72 : x
  2. Step 2: Convert to fraction form
    11,173.84/16,760.80 = 5,312.72/x
  3. Step 3: Cross multiply
    11,173.84x = 16,760.80 × 5,312.72
  4. Step 4: Simplify right side
    11,173.84x = 89,045,437.38
  5. Step 5: Solve for x
    x = 89,045,437.38/11,173.84
  6. Step 6: Final answer
    x = 7,969.10

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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.