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Finding the Fourth Proportional to 7,274.80, 10,912.20 and 6,043.60

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Solution

The fourth proportional to 7,274.80, 10,912.20 and 6,043.60 is: 9,065.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,274.80 : 10,912.20 = 6,043.60 : x
  2. Step 2: Convert to fraction form
    7,274.80/10,912.20 = 6,043.60/x
  3. Step 3: Cross multiply
    7,274.80x = 10,912.20 × 6,043.60
  4. Step 4: Simplify right side
    7,274.80x = 65,948,971.92
  5. Step 5: Solve for x
    x = 65,948,971.92/7,274.80
  6. Step 6: Final answer
    x = 9,065.40

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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.