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Finding the Fourth Proportional to 5,277.72, 7,916.58 and 2,355.24

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Solution

The fourth proportional to 5,277.72, 7,916.58 and 2,355.24 is: 3,532.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.72 : 7,916.58 = 2,355.24 : x
  2. Step 2: Convert to fraction form
    5,277.72/7,916.58 = 2,355.24/x
  3. Step 3: Cross multiply
    5,277.72x = 7,916.58 × 2,355.24
  4. Step 4: Simplify right side
    5,277.72x = 18,645,445.88
  5. Step 5: Solve for x
    x = 18,645,445.88/5,277.72
  6. Step 6: Final answer
    x = 3,532.86

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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.