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Finding the Fourth Proportional to 191,859.27, 287,665.90 and 79,616.96

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Solution

The fourth proportional to 191,859.27, 287,665.90 and 79,616.96 is: 119,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,859.27 : 287,665.90 = 79,616.96 : x
  2. Step 2: Convert to fraction form
    191,859.27/287,665.90 = 79,616.96/x
  3. Step 3: Cross multiply
    191,859.27x = 287,665.90 × 79,616.96
  4. Step 4: Simplify right side
    191,859.27x = 22,903,083,895.04
  5. Step 5: Solve for x
    x = 22,903,083,895.04/191,859.27
  6. Step 6: Final answer
    x = 119,374.40

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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.