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Finding the Fourth Proportional to 69,968.50, 96,553.68 and 38,136.72

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Solution

The fourth proportional to 69,968.50, 96,553.68 and 38,136.72 is: 52,627.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,968.50 : 96,553.68 = 38,136.72 : x
  2. Step 2: Convert to fraction form
    69,968.50/96,553.68 = 38,136.72/x
  3. Step 3: Cross multiply
    69,968.50x = 96,553.68 × 38,136.72
  4. Step 4: Simplify right side
    69,968.50x = 3,682,240,659.13
  5. Step 5: Solve for x
    x = 3,682,240,659.13/69,968.50
  6. Step 6: Final answer
    x = 52,627.12

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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.