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Finding the Fourth Proportional to 191,857.05, 287,621.46 and 73,613.25

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Solution

The fourth proportional to 191,857.05, 287,621.46 and 73,613.25 is: 110,356.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,857.05 : 287,621.46 = 73,613.25 : x
  2. Step 2: Convert to fraction form
    191,857.05/287,621.46 = 73,613.25/x
  3. Step 3: Cross multiply
    191,857.05x = 287,621.46 × 73,613.25
  4. Step 4: Simplify right side
    191,857.05x = 21,172,750,440.35
  5. Step 5: Solve for x
    x = 21,172,750,440.35/191,857.05
  6. Step 6: Final answer
    x = 110,356.91

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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.