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Finding the Fourth Proportional to 6,916.71, 10,375.11 and 1,722.59

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Solution

The fourth proportional to 6,916.71, 10,375.11 and 1,722.59 is: 2,583.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.71 : 10,375.11 = 1,722.59 : x
  2. Step 2: Convert to fraction form
    6,916.71/10,375.11 = 1,722.59/x
  3. Step 3: Cross multiply
    6,916.71x = 10,375.11 × 1,722.59
  4. Step 4: Simplify right side
    6,916.71x = 17,872,047.77
  5. Step 5: Solve for x
    x = 17,872,047.77/6,916.71
  6. Step 6: Final answer
    x = 2,583.89

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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.