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Finding the Fourth Proportional to 140,767.99, 211,173.14 and 40,915.22

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Solution

The fourth proportional to 140,767.99, 211,173.14 and 40,915.22 is: 61,378.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,767.99 : 211,173.14 = 40,915.22 : x
  2. Step 2: Convert to fraction form
    140,767.99/211,173.14 = 40,915.22/x
  3. Step 3: Cross multiply
    140,767.99x = 211,173.14 × 40,915.22
  4. Step 4: Simplify right side
    140,767.99x = 8,640,194,527.61
  5. Step 5: Solve for x
    x = 8,640,194,527.61/140,767.99
  6. Step 6: Final answer
    x = 61,378.97

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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.