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Finding the Fourth Proportional to 7,323.87, 10,990.32 and 2,643.57

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Solution

The fourth proportional to 7,323.87, 10,990.32 and 2,643.57 is: 3,966.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,323.87 : 10,990.32 = 2,643.57 : x
  2. Step 2: Convert to fraction form
    7,323.87/10,990.32 = 2,643.57/x
  3. Step 3: Cross multiply
    7,323.87x = 10,990.32 × 2,643.57
  4. Step 4: Simplify right side
    7,323.87x = 29,053,680.24
  5. Step 5: Solve for x
    x = 29,053,680.24/7,323.87
  6. Step 6: Final answer
    x = 3,966.98

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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.