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Finding the Fourth Proportional to 45,301.42, 67,965.90 and 14,136.94

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Solution

The fourth proportional to 45,301.42, 67,965.90 and 14,136.94 is: 21,209.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,301.42 : 67,965.90 = 14,136.94 : x
  2. Step 2: Convert to fraction form
    45,301.42/67,965.90 = 14,136.94/x
  3. Step 3: Cross multiply
    45,301.42x = 67,965.90 × 14,136.94
  4. Step 4: Simplify right side
    45,301.42x = 960,829,850.35
  5. Step 5: Solve for x
    x = 960,829,850.35/45,301.42
  6. Step 6: Final answer
    x = 21,209.71

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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.