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Finding the Fourth Proportional to 6,565.81, 9,847.21 and 1,885.79

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Solution

The fourth proportional to 6,565.81, 9,847.21 and 1,885.79 is: 2,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,565.81 : 9,847.21 = 1,885.79 : x
  2. Step 2: Convert to fraction form
    6,565.81/9,847.21 = 1,885.79/x
  3. Step 3: Cross multiply
    6,565.81x = 9,847.21 × 1,885.79
  4. Step 4: Simplify right side
    6,565.81x = 18,569,716.20
  5. Step 5: Solve for x
    x = 18,569,716.20/6,565.81
  6. Step 6: Final answer
    x = 2,828.25

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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.