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Finding the Fourth Proportional to 1,956.62, 2,934.61 and 723.74

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Solution

The fourth proportional to 1,956.62, 2,934.61 and 723.74 is: 1,085.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.62 : 2,934.61 = 723.74 : x
  2. Step 2: Convert to fraction form
    1,956.62/2,934.61 = 723.74/x
  3. Step 3: Cross multiply
    1,956.62x = 2,934.61 × 723.74
  4. Step 4: Simplify right side
    1,956.62x = 2,123,900.17
  5. Step 5: Solve for x
    x = 2,123,900.17/1,956.62
  6. Step 6: Final answer
    x = 1,085.50

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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.