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Finding the Fourth Proportional to 7,275.92, 10,913.80 and 4,355.04

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Solution

The fourth proportional to 7,275.92, 10,913.80 and 4,355.04 is: 6,532.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.92 : 10,913.80 = 4,355.04 : x
  2. Step 2: Convert to fraction form
    7,275.92/10,913.80 = 4,355.04/x
  3. Step 3: Cross multiply
    7,275.92x = 10,913.80 × 4,355.04
  4. Step 4: Simplify right side
    7,275.92x = 47,530,035.55
  5. Step 5: Solve for x
    x = 47,530,035.55/7,275.92
  6. Step 6: Final answer
    x = 6,532.51

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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.