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Finding the Fourth Proportional to 5,787.36, 8,681.07 and 1,891.77

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Solution

The fourth proportional to 5,787.36, 8,681.07 and 1,891.77 is: 2,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.36 : 8,681.07 = 1,891.77 : x
  2. Step 2: Convert to fraction form
    5,787.36/8,681.07 = 1,891.77/x
  3. Step 3: Cross multiply
    5,787.36x = 8,681.07 × 1,891.77
  4. Step 4: Simplify right side
    5,787.36x = 16,422,587.79
  5. Step 5: Solve for x
    x = 16,422,587.79/5,787.36
  6. Step 6: Final answer
    x = 2,837.66

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Double scale
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Similar ratio
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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.