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Finding the Fourth Proportional to 3,918.48, 5,874.12 and 1,695.94

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Solution

The fourth proportional to 3,918.48, 5,874.12 and 1,695.94 is: 2,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.48 : 5,874.12 = 1,695.94 : x
  2. Step 2: Convert to fraction form
    3,918.48/5,874.12 = 1,695.94/x
  3. Step 3: Cross multiply
    3,918.48x = 5,874.12 × 1,695.94
  4. Step 4: Simplify right side
    3,918.48x = 9,962,140.39
  5. Step 5: Solve for x
    x = 9,962,140.39/3,918.48
  6. Step 6: Final answer
    x = 2,542.35

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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.