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Finding the Fourth Proportional to 4,674.79, 6,449.61 and 2,658

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Solution

The fourth proportional to 4,674.79, 6,449.61 and 2,658 is: 3,667.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.79 : 6,449.61 = 2,658 : x
  2. Step 2: Convert to fraction form
    4,674.79/6,449.61 = 2,658/x
  3. Step 3: Cross multiply
    4,674.79x = 6,449.61 × 2,658
  4. Step 4: Simplify right side
    4,674.79x = 17,143,063.38
  5. Step 5: Solve for x
    x = 17,143,063.38/4,674.79
  6. Step 6: Final answer
    x = 3,667.13

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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.