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Finding the Fourth Proportional to 211,553.97, 317,299.68 and 69,414.27

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Solution

The fourth proportional to 211,553.97, 317,299.68 and 69,414.27 is: 104,111.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,553.97 : 317,299.68 = 69,414.27 : x
  2. Step 2: Convert to fraction form
    211,553.97/317,299.68 = 69,414.27/x
  3. Step 3: Cross multiply
    211,553.97x = 317,299.68 × 69,414.27
  4. Step 4: Simplify right side
    211,553.97x = 22,025,125,658.43
  5. Step 5: Solve for x
    x = 22,025,125,658.43/211,553.97
  6. Step 6: Final answer
    x = 104,111.14

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1.5x scale

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.