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Finding the Fourth Proportional to 3,176.79, 4,383.78 and 1,866.00

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Solution

The fourth proportional to 3,176.79, 4,383.78 and 1,866.00 is: 2,574.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.79 : 4,383.78 = 1,866.00 : x
  2. Step 2: Convert to fraction form
    3,176.79/4,383.78 = 1,866.00/x
  3. Step 3: Cross multiply
    3,176.79x = 4,383.78 × 1,866.00
  4. Step 4: Simplify right side
    3,176.79x = 8,180,135.11
  5. Step 5: Solve for x
    x = 8,180,135.11/3,176.79
  6. Step 6: Final answer
    x = 2,574.97

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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.