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Finding the Fourth Proportional to 191,963.85, 287,987.79 and 58,854.49

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Solution

The fourth proportional to 191,963.85, 287,987.79 and 58,854.49 is: 88,294.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,963.85 : 287,987.79 = 58,854.49 : x
  2. Step 2: Convert to fraction form
    191,963.85/287,987.79 = 58,854.49/x
  3. Step 3: Cross multiply
    191,963.85x = 287,987.79 × 58,854.49
  4. Step 4: Simplify right side
    191,963.85x = 16,949,374,506.68
  5. Step 5: Solve for x
    x = 16,949,374,506.68/191,963.85
  6. Step 6: Final answer
    x = 88,294.62

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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.