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Finding the Fourth Proportional to 19,446.75, 29,174.45 and 7,134.75

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Solution

The fourth proportional to 19,446.75, 29,174.45 and 7,134.75 is: 10,703.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,446.75 : 29,174.45 = 7,134.75 : x
  2. Step 2: Convert to fraction form
    19,446.75/29,174.45 = 7,134.75/x
  3. Step 3: Cross multiply
    19,446.75x = 29,174.45 × 7,134.75
  4. Step 4: Simplify right side
    19,446.75x = 208,152,371.46
  5. Step 5: Solve for x
    x = 208,152,371.46/19,446.75
  6. Step 6: Final answer
    x = 10,703.71

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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.