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Finding the Fourth Proportional to 191,129.40, 263,795.13 and 126,599.40

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Solution

The fourth proportional to 191,129.40, 263,795.13 and 126,599.40 is: 174,731.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,129.40 : 263,795.13 = 126,599.40 : x
  2. Step 2: Convert to fraction form
    191,129.40/263,795.13 = 126,599.40/x
  3. Step 3: Cross multiply
    191,129.40x = 263,795.13 × 126,599.40
  4. Step 4: Simplify right side
    191,129.40x = 33,396,305,180.92
  5. Step 5: Solve for x
    x = 33,396,305,180.92/191,129.40
  6. Step 6: Final answer
    x = 174,731.39

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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.