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Finding the Fourth Proportional to 8,377.84, 11,561.92 and 4,651.84

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Solution

The fourth proportional to 8,377.84, 11,561.92 and 4,651.84 is: 6,419.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,377.84 : 11,561.92 = 4,651.84 : x
  2. Step 2: Convert to fraction form
    8,377.84/11,561.92 = 4,651.84/x
  3. Step 3: Cross multiply
    8,377.84x = 11,561.92 × 4,651.84
  4. Step 4: Simplify right side
    8,377.84x = 53,784,201.93
  5. Step 5: Solve for x
    x = 53,784,201.93/8,377.84
  6. Step 6: Final answer
    x = 6,419.82

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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.