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Finding the Fourth Proportional to 7,954.80, 10,977.84 and 4,418.40

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Solution

The fourth proportional to 7,954.80, 10,977.84 and 4,418.40 is: 6,097.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.80 : 10,977.84 = 4,418.40 : x
  2. Step 2: Convert to fraction form
    7,954.80/10,977.84 = 4,418.40/x
  3. Step 3: Cross multiply
    7,954.80x = 10,977.84 × 4,418.40
  4. Step 4: Simplify right side
    7,954.80x = 48,504,488.26
  5. Step 5: Solve for x
    x = 48,504,488.26/7,954.80
  6. Step 6: Final answer
    x = 6,097.51

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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.