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Finding the Fourth Proportional to 4,792.21, 6,613 and 2,667.86

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Solution

The fourth proportional to 4,792.21, 6,613 and 2,667.86 is: 3,681.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,792.21 : 6,613 = 2,667.86 : x
  2. Step 2: Convert to fraction form
    4,792.21/6,613 = 2,667.86/x
  3. Step 3: Cross multiply
    4,792.21x = 6,613 × 2,667.86
  4. Step 4: Simplify right side
    4,792.21x = 17,642,558.18
  5. Step 5: Solve for x
    x = 17,642,558.18/4,792.21
  6. Step 6: Final answer
    x = 3,681.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.