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Finding the Fourth Proportional to 5,906.40, 8,872.80 and 4,934.40

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Solution

The fourth proportional to 5,906.40, 8,872.80 and 4,934.40 is: 7,412.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,906.40 : 8,872.80 = 4,934.40 : x
  2. Step 2: Convert to fraction form
    5,906.40/8,872.80 = 4,934.40/x
  3. Step 3: Cross multiply
    5,906.40x = 8,872.80 × 4,934.40
  4. Step 4: Simplify right side
    5,906.40x = 43,781,944.32
  5. Step 5: Solve for x
    x = 43,781,944.32/5,906.40
  6. Step 6: Final answer
    x = 7,412.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.