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Finding the Fourth Proportional to 191,451.94, 287,144.06 and 71,481.96

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Solution

The fourth proportional to 191,451.94, 287,144.06 and 71,481.96 is: 107,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,451.94 : 287,144.06 = 71,481.96 : x
  2. Step 2: Convert to fraction form
    191,451.94/287,144.06 = 71,481.96/x
  3. Step 3: Cross multiply
    191,451.94x = 287,144.06 × 71,481.96
  4. Step 4: Simplify right side
    191,451.94x = 20,525,619,853.75
  5. Step 5: Solve for x
    x = 20,525,619,853.75/191,451.94
  6. Step 6: Final answer
    x = 107,210.30

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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.