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Finding the Fourth Proportional to 2,876.49, 4,313.81 and 928.24

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Solution

The fourth proportional to 2,876.49, 4,313.81 and 928.24 is: 1,392.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.49 : 4,313.81 = 928.24 : x
  2. Step 2: Convert to fraction form
    2,876.49/4,313.81 = 928.24/x
  3. Step 3: Cross multiply
    2,876.49x = 4,313.81 × 928.24
  4. Step 4: Simplify right side
    2,876.49x = 4,004,250.99
  5. Step 5: Solve for x
    x = 4,004,250.99/2,876.49
  6. Step 6: Final answer
    x = 1,392.06

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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.