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Finding the Fourth Proportional to 340,910.78, 470,352.62 and 197,642.23

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Solution

The fourth proportional to 340,910.78, 470,352.62 and 197,642.23 is: 272,685.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,910.78 : 470,352.62 = 197,642.23 : x
  2. Step 2: Convert to fraction form
    340,910.78/470,352.62 = 197,642.23/x
  3. Step 3: Cross multiply
    340,910.78x = 470,352.62 × 197,642.23
  4. Step 4: Simplify right side
    340,910.78x = 92,961,539,187.56
  5. Step 5: Solve for x
    x = 92,961,539,187.56/340,910.78
  6. Step 6: Final answer
    x = 272,685.83

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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.