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Finding the Fourth Proportional to 5,313.64, 7,332.06 and 2,956

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Solution

The fourth proportional to 5,313.64, 7,332.06 and 2,956 is: 4,078.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,313.64 : 7,332.06 = 2,956 : x
  2. Step 2: Convert to fraction form
    5,313.64/7,332.06 = 2,956/x
  3. Step 3: Cross multiply
    5,313.64x = 7,332.06 × 2,956
  4. Step 4: Simplify right side
    5,313.64x = 21,673,569.36
  5. Step 5: Solve for x
    x = 21,673,569.36/5,313.64
  6. Step 6: Final answer
    x = 4,078.86

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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.