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Finding the Fourth Proportional to 14,474.60, 21,713.10 and 4,613.60

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Solution

The fourth proportional to 14,474.60, 21,713.10 and 4,613.60 is: 6,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,474.60 : 21,713.10 = 4,613.60 : x
  2. Step 2: Convert to fraction form
    14,474.60/21,713.10 = 4,613.60/x
  3. Step 3: Cross multiply
    14,474.60x = 21,713.10 × 4,613.60
  4. Step 4: Simplify right side
    14,474.60x = 100,175,558.16
  5. Step 5: Solve for x
    x = 100,175,558.16/14,474.60
  6. Step 6: Final answer
    x = 6,920.78

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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.