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Finding the Fourth Proportional to 3,858.56, 5,784.60 and 1,551.68

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Solution

The fourth proportional to 3,858.56, 5,784.60 and 1,551.68 is: 2,326.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.56 : 5,784.60 = 1,551.68 : x
  2. Step 2: Convert to fraction form
    3,858.56/5,784.60 = 1,551.68/x
  3. Step 3: Cross multiply
    3,858.56x = 5,784.60 × 1,551.68
  4. Step 4: Simplify right side
    3,858.56x = 8,975,848.13
  5. Step 5: Solve for x
    x = 8,975,848.13/3,858.56
  6. Step 6: Final answer
    x = 2,326.22

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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.