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Finding the Fourth Proportional to 344,110.40, 515,992.80 and 156,910.40

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Solution

The fourth proportional to 344,110.40, 515,992.80 and 156,910.40 is: 235,286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,110.40 : 515,992.80 = 156,910.40 : x
  2. Step 2: Convert to fraction form
    344,110.40/515,992.80 = 156,910.40/x
  3. Step 3: Cross multiply
    344,110.40x = 515,992.80 × 156,910.40
  4. Step 4: Simplify right side
    344,110.40x = 80,964,636,645.12
  5. Step 5: Solve for x
    x = 80,964,636,645.12/344,110.40
  6. Step 6: Final answer
    x = 235,286.81

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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.