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Finding the Fourth Proportional to 1,194.65, 1,788.92 and 708.05

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Solution

The fourth proportional to 1,194.65, 1,788.92 and 708.05 is: 1,060.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.65 : 1,788.92 = 708.05 : x
  2. Step 2: Convert to fraction form
    1,194.65/1,788.92 = 708.05/x
  3. Step 3: Cross multiply
    1,194.65x = 1,788.92 × 708.05
  4. Step 4: Simplify right side
    1,194.65x = 1,266,644.81
  5. Step 5: Solve for x
    x = 1,266,644.81/1,194.65
  6. Step 6: Final answer
    x = 1,060.26

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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.