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Finding the Fourth Proportional to 85,221.69, 127,832.54 and 26,057.36

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Solution

The fourth proportional to 85,221.69, 127,832.54 and 26,057.36 is: 39,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,221.69 : 127,832.54 = 26,057.36 : x
  2. Step 2: Convert to fraction form
    85,221.69/127,832.54 = 26,057.36/x
  3. Step 3: Cross multiply
    85,221.69x = 127,832.54 × 26,057.36
  4. Step 4: Simplify right side
    85,221.69x = 3,330,978,514.49
  5. Step 5: Solve for x
    x = 3,330,978,514.49/85,221.69
  6. Step 6: Final answer
    x = 39,086.04

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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.