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Finding the Fourth Proportional to 7,916.72, 11,876.72 and 2,369.84

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Solution

The fourth proportional to 7,916.72, 11,876.72 and 2,369.84 is: 3,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.72 : 11,876.72 = 2,369.84 : x
  2. Step 2: Convert to fraction form
    7,916.72/11,876.72 = 2,369.84/x
  3. Step 3: Cross multiply
    7,916.72x = 11,876.72 × 2,369.84
  4. Step 4: Simplify right side
    7,916.72x = 28,145,926.12
  5. Step 5: Solve for x
    x = 28,145,926.12/7,916.72
  6. Step 6: Final answer
    x = 3,555.25

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Why These Related Problems?

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