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Finding the Fourth Proportional to 7,275.70, 10,913.55 and 4,813.30

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Solution

The fourth proportional to 7,275.70, 10,913.55 and 4,813.30 is: 7,219.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.70 : 10,913.55 = 4,813.30 : x
  2. Step 2: Convert to fraction form
    7,275.70/10,913.55 = 4,813.30/x
  3. Step 3: Cross multiply
    7,275.70x = 10,913.55 × 4,813.30
  4. Step 4: Simplify right side
    7,275.70x = 52,530,190.22
  5. Step 5: Solve for x
    x = 52,530,190.22/7,275.70
  6. Step 6: Final answer
    x = 7,219.95

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1.5x scale

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.