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Finding the Fourth Proportional to 191,732.80, 287,599.20 and 73,343.20

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Solution

The fourth proportional to 191,732.80, 287,599.20 and 73,343.20 is: 110,014.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,732.80 : 287,599.20 = 73,343.20 : x
  2. Step 2: Convert to fraction form
    191,732.80/287,599.20 = 73,343.20/x
  3. Step 3: Cross multiply
    191,732.80x = 287,599.20 × 73,343.20
  4. Step 4: Simplify right side
    191,732.80x = 21,093,445,645.44
  5. Step 5: Solve for x
    x = 21,093,445,645.44/191,732.80
  6. Step 6: Final answer
    x = 110,014.80

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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.