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Finding the Fourth Proportional to 199,133.60, 298,753.20 and 86,765.60

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Solution

The fourth proportional to 199,133.60, 298,753.20 and 86,765.60 is: 130,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,133.60 : 298,753.20 = 86,765.60 : x
  2. Step 2: Convert to fraction form
    199,133.60/298,753.20 = 86,765.60/x
  3. Step 3: Cross multiply
    199,133.60x = 298,753.20 × 86,765.60
  4. Step 4: Simplify right side
    199,133.60x = 25,921,500,649.92
  5. Step 5: Solve for x
    x = 25,921,500,649.92/199,133.60
  6. Step 6: Final answer
    x = 130,171.41

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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.