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Finding the Fourth Proportional to 7,920.77, 10,930.41 and 4,563.59

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Solution

The fourth proportional to 7,920.77, 10,930.41 and 4,563.59 is: 6,297.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.77 : 10,930.41 = 4,563.59 : x
  2. Step 2: Convert to fraction form
    7,920.77/10,930.41 = 4,563.59/x
  3. Step 3: Cross multiply
    7,920.77x = 10,930.41 × 4,563.59
  4. Step 4: Simplify right side
    7,920.77x = 49,881,855.12
  5. Step 5: Solve for x
    x = 49,881,855.12/7,920.77
  6. Step 6: Final answer
    x = 6,297.61

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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.