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Finding the Fourth Proportional to 191,979.72, 288,012.24 and 73,651.14

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Solution

The fourth proportional to 191,979.72, 288,012.24 and 73,651.14 is: 110,493.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,979.72 : 288,012.24 = 73,651.14 : x
  2. Step 2: Convert to fraction form
    191,979.72/288,012.24 = 73,651.14/x
  3. Step 3: Cross multiply
    191,979.72x = 288,012.24 × 73,651.14
  4. Step 4: Simplify right side
    191,979.72x = 21,212,429,809.95
  5. Step 5: Solve for x
    x = 21,212,429,809.95/191,979.72
  6. Step 6: Final answer
    x = 110,493.08

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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.