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Finding the Fourth Proportional to 207,259.50, 310,889.34 and 74,131.80

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Solution

The fourth proportional to 207,259.50, 310,889.34 and 74,131.80 is: 111,197.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,259.50 : 310,889.34 = 74,131.80 : x
  2. Step 2: Convert to fraction form
    207,259.50/310,889.34 = 74,131.80/x
  3. Step 3: Cross multiply
    207,259.50x = 310,889.34 × 74,131.80
  4. Step 4: Simplify right side
    207,259.50x = 23,046,786,375.01
  5. Step 5: Solve for x
    x = 23,046,786,375.01/207,259.50
  6. Step 6: Final answer
    x = 111,197.73

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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.