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Finding the Fourth Proportional to 191,941.20, 287,998.20 and 92,062.80

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Solution

The fourth proportional to 191,941.20, 287,998.20 and 92,062.80 is: 138,135.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,941.20 : 287,998.20 = 92,062.80 : x
  2. Step 2: Convert to fraction form
    191,941.20/287,998.20 = 92,062.80/x
  3. Step 3: Cross multiply
    191,941.20x = 287,998.20 × 92,062.80
  4. Step 4: Simplify right side
    191,941.20x = 26,513,920,686.96
  5. Step 5: Solve for x
    x = 26,513,920,686.96/191,941.20
  6. Step 6: Final answer
    x = 138,135.64

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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.