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Finding the Fourth Proportional to 350,515.11, 483,710.25 and 189,369.66

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Solution

The fourth proportional to 350,515.11, 483,710.25 and 189,369.66 is: 261,329.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,515.11 : 483,710.25 = 189,369.66 : x
  2. Step 2: Convert to fraction form
    350,515.11/483,710.25 = 189,369.66/x
  3. Step 3: Cross multiply
    350,515.11x = 483,710.25 × 189,369.66
  4. Step 4: Simplify right side
    350,515.11x = 91,600,045,581.02
  5. Step 5: Solve for x
    x = 91,600,045,581.02/350,515.11
  6. Step 6: Final answer
    x = 261,329.81

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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.