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Finding the Fourth Proportional to 2,390.37, 3,585.55 and 746.92

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Solution

The fourth proportional to 2,390.37, 3,585.55 and 746.92 is: 1,120.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.37 : 3,585.55 = 746.92 : x
  2. Step 2: Convert to fraction form
    2,390.37/3,585.55 = 746.92/x
  3. Step 3: Cross multiply
    2,390.37x = 3,585.55 × 746.92
  4. Step 4: Simplify right side
    2,390.37x = 2,678,101.08
  5. Step 5: Solve for x
    x = 2,678,101.08/2,390.37
  6. Step 6: Final answer
    x = 1,120.37

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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.