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Finding the Fourth Proportional to 291,493.50, 437,240.25 and 81,136.91

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Solution

The fourth proportional to 291,493.50, 437,240.25 and 81,136.91 is: 121,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,493.50 : 437,240.25 = 81,136.91 : x
  2. Step 2: Convert to fraction form
    291,493.50/437,240.25 = 81,136.91/x
  3. Step 3: Cross multiply
    291,493.50x = 437,240.25 × 81,136.91
  4. Step 4: Simplify right side
    291,493.50x = 35,476,320,626.43
  5. Step 5: Solve for x
    x = 35,476,320,626.43/291,493.50
  6. Step 6: Final answer
    x = 121,705.36

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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.