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Finding the Fourth Proportional to 4,927.88, 6,793.14 and 4,078.28

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Solution

The fourth proportional to 4,927.88, 6,793.14 and 4,078.28 is: 5,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,927.88 : 6,793.14 = 4,078.28 : x
  2. Step 2: Convert to fraction form
    4,927.88/6,793.14 = 4,078.28/x
  3. Step 3: Cross multiply
    4,927.88x = 6,793.14 × 4,078.28
  4. Step 4: Simplify right side
    4,927.88x = 27,704,327.00
  5. Step 5: Solve for x
    x = 27,704,327.00/4,927.88
  6. Step 6: Final answer
    x = 5,621.96

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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.