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Finding the Fourth Proportional to 14,394.16, 19,863.48 and 8,105.68

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Solution

The fourth proportional to 14,394.16, 19,863.48 and 8,105.68 is: 11,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,394.16 : 19,863.48 = 8,105.68 : x
  2. Step 2: Convert to fraction form
    14,394.16/19,863.48 = 8,105.68/x
  3. Step 3: Cross multiply
    14,394.16x = 19,863.48 × 8,105.68
  4. Step 4: Simplify right side
    14,394.16x = 161,007,012.57
  5. Step 5: Solve for x
    x = 161,007,012.57/14,394.16
  6. Step 6: Final answer
    x = 11,185.58

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1.5x scale

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.