Home / 70,369.14-105,553.68-17,778.61

Finding the Fourth Proportional to 70,369.14, 105,553.68 and 17,778.61

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Solution

The fourth proportional to 70,369.14, 105,553.68 and 17,778.61 is: 26,667.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,369.14 : 105,553.68 = 17,778.61 : x
  2. Step 2: Convert to fraction form
    70,369.14/105,553.68 = 17,778.61/x
  3. Step 3: Cross multiply
    70,369.14x = 105,553.68 × 17,778.61
  4. Step 4: Simplify right side
    70,369.14x = 1,876,597,710.78
  5. Step 5: Solve for x
    x = 1,876,597,710.78/70,369.14
  6. Step 6: Final answer
    x = 26,667.91

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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.