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Finding the Fourth Proportional to 165,998.70, 248,965.65 and 55,190.70

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Solution

The fourth proportional to 165,998.70, 248,965.65 and 55,190.70 is: 82,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,998.70 : 248,965.65 = 55,190.70 : x
  2. Step 2: Convert to fraction form
    165,998.70/248,965.65 = 55,190.70/x
  3. Step 3: Cross multiply
    165,998.70x = 248,965.65 × 55,190.70
  4. Step 4: Simplify right side
    165,998.70x = 13,740,588,499.46
  5. Step 5: Solve for x
    x = 13,740,588,499.46/165,998.70
  6. Step 6: Final answer
    x = 82,775.28

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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.