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Finding the Fourth Proportional to 1,941.13, 2,911.32 and 708.25

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Solution

The fourth proportional to 1,941.13, 2,911.32 and 708.25 is: 1,062.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.13 : 2,911.32 = 708.25 : x
  2. Step 2: Convert to fraction form
    1,941.13/2,911.32 = 708.25/x
  3. Step 3: Cross multiply
    1,941.13x = 2,911.32 × 708.25
  4. Step 4: Simplify right side
    1,941.13x = 2,061,953.32
  5. Step 5: Solve for x
    x = 2,061,953.32/1,941.13
  6. Step 6: Final answer
    x = 1,062.24

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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.