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Finding the Fourth Proportional to 138,059.99, 207,093.50 and 38,221.04

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Solution

The fourth proportional to 138,059.99, 207,093.50 and 38,221.04 is: 57,332.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,059.99 : 207,093.50 = 38,221.04 : x
  2. Step 2: Convert to fraction form
    138,059.99/207,093.50 = 38,221.04/x
  3. Step 3: Cross multiply
    138,059.99x = 207,093.50 × 38,221.04
  4. Step 4: Simplify right side
    138,059.99x = 7,915,328,640.60
  5. Step 5: Solve for x
    x = 7,915,328,640.60/138,059.99
  6. Step 6: Final answer
    x = 57,332.53

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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.