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Finding the Fourth Proportional to 191,764.97, 287,688.98 and 73,436.32

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Solution

The fourth proportional to 191,764.97, 287,688.98 and 73,436.32 is: 110,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,764.97 : 287,688.98 = 73,436.32 : x
  2. Step 2: Convert to fraction form
    191,764.97/287,688.98 = 73,436.32/x
  3. Step 3: Cross multiply
    191,764.97x = 287,688.98 × 73,436.32
  4. Step 4: Simplify right side
    191,764.97x = 21,126,820,538.96
  5. Step 5: Solve for x
    x = 21,126,820,538.96/191,764.97
  6. Step 6: Final answer
    x = 110,170.39

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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.