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Finding the Fourth Proportional to 266,140.80, 367,243.20 and 158,716.80

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Solution

The fourth proportional to 266,140.80, 367,243.20 and 158,716.80 is: 219,010.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,140.80 : 367,243.20 = 158,716.80 : x
  2. Step 2: Convert to fraction form
    266,140.80/367,243.20 = 158,716.80/x
  3. Step 3: Cross multiply
    266,140.80x = 367,243.20 × 158,716.80
  4. Step 4: Simplify right side
    266,140.80x = 58,287,665,525.76
  5. Step 5: Solve for x
    x = 58,287,665,525.76/266,140.80
  6. Step 6: Final answer
    x = 219,010.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.