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Finding the Fourth Proportional to 7,292.80, 10,930.20 and 4,952.80

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Solution

The fourth proportional to 7,292.80, 10,930.20 and 4,952.80 is: 7,423.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,292.80 : 10,930.20 = 4,952.80 : x
  2. Step 2: Convert to fraction form
    7,292.80/10,930.20 = 4,952.80/x
  3. Step 3: Cross multiply
    7,292.80x = 10,930.20 × 4,952.80
  4. Step 4: Simplify right side
    7,292.80x = 54,135,094.56
  5. Step 5: Solve for x
    x = 54,135,094.56/7,292.80
  6. Step 6: Final answer
    x = 7,423.09

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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.