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Finding the Fourth Proportional to 1,806.71, 2,491.70 and 1,177

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Solution

The fourth proportional to 1,806.71, 2,491.70 and 1,177 is: 1,623.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.71 : 2,491.70 = 1,177 : x
  2. Step 2: Convert to fraction form
    1,806.71/2,491.70 = 1,177/x
  3. Step 3: Cross multiply
    1,806.71x = 2,491.70 × 1,177
  4. Step 4: Simplify right side
    1,806.71x = 2,932,730.90
  5. Step 5: Solve for x
    x = 2,932,730.90/1,806.71
  6. Step 6: Final answer
    x = 1,623.24

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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.