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Finding the Fourth Proportional to 191,960.08, 287,816.78 and 79,717.72

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Solution

The fourth proportional to 191,960.08, 287,816.78 and 79,717.72 is: 119,525.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,960.08 : 287,816.78 = 79,717.72 : x
  2. Step 2: Convert to fraction form
    191,960.08/287,816.78 = 79,717.72/x
  3. Step 3: Cross multiply
    191,960.08x = 287,816.78 × 79,717.72
  4. Step 4: Simplify right side
    191,960.08x = 22,944,097,479.34
  5. Step 5: Solve for x
    x = 22,944,097,479.34/191,960.08
  6. Step 6: Final answer
    x = 119,525.36

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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.