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Finding the Fourth Proportional to 1,093.92, 1,642.32 and 746.16

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Solution

The fourth proportional to 1,093.92, 1,642.32 and 746.16 is: 1,120.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093.92 : 1,642.32 = 746.16 : x
  2. Step 2: Convert to fraction form
    1,093.92/1,642.32 = 746.16/x
  3. Step 3: Cross multiply
    1,093.92x = 1,642.32 × 746.16
  4. Step 4: Simplify right side
    1,093.92x = 1,225,433.49
  5. Step 5: Solve for x
    x = 1,225,433.49/1,093.92
  6. Step 6: Final answer
    x = 1,120.22

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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.