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Finding the Fourth Proportional to 266,620.74, 400,078.73 and 159,742.05

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Solution

The fourth proportional to 266,620.74, 400,078.73 and 159,742.05 is: 239,701.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,620.74 : 400,078.73 = 159,742.05 : x
  2. Step 2: Convert to fraction form
    266,620.74/400,078.73 = 159,742.05/x
  3. Step 3: Cross multiply
    266,620.74x = 400,078.73 × 159,742.05
  4. Step 4: Simplify right side
    266,620.74x = 63,909,396,491.60
  5. Step 5: Solve for x
    x = 63,909,396,491.60/266,620.74
  6. Step 6: Final answer
    x = 239,701.52

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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.