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Finding the Fourth Proportional to 7,074.72, 10,611.54 and 2,913.66

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Solution

The fourth proportional to 7,074.72, 10,611.54 and 2,913.66 is: 4,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,074.72 : 10,611.54 = 2,913.66 : x
  2. Step 2: Convert to fraction form
    7,074.72/10,611.54 = 2,913.66/x
  3. Step 3: Cross multiply
    7,074.72x = 10,611.54 × 2,913.66
  4. Step 4: Simplify right side
    7,074.72x = 30,918,419.64
  5. Step 5: Solve for x
    x = 30,918,419.64/7,074.72
  6. Step 6: Final answer
    x = 4,370.27

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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.