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Finding the Fourth Proportional to 7,920.80, 10,932.05 and 4,563.01

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Solution

The fourth proportional to 7,920.80, 10,932.05 and 4,563.01 is: 6,297.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.80 : 10,932.05 = 4,563.01 : x
  2. Step 2: Convert to fraction form
    7,920.80/10,932.05 = 4,563.01/x
  3. Step 3: Cross multiply
    7,920.80x = 10,932.05 × 4,563.01
  4. Step 4: Simplify right side
    7,920.80x = 49,883,037.55
  5. Step 5: Solve for x
    x = 49,883,037.55/7,920.80
  6. Step 6: Final answer
    x = 6,297.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.