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Finding the Fourth Proportional to 6,078.80, 8,392.20 and 4,193.12

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Solution

The fourth proportional to 6,078.80, 8,392.20 and 4,193.12 is: 5,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,078.80 : 8,392.20 = 4,193.12 : x
  2. Step 2: Convert to fraction form
    6,078.80/8,392.20 = 4,193.12/x
  3. Step 3: Cross multiply
    6,078.80x = 8,392.20 × 4,193.12
  4. Step 4: Simplify right side
    6,078.80x = 35,189,501.66
  5. Step 5: Solve for x
    x = 35,189,501.66/6,078.80
  6. Step 6: Final answer
    x = 5,788.89

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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.