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Finding the Fourth Proportional to 191,967.91, 287,993.88 and 58,858.55

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Solution

The fourth proportional to 191,967.91, 287,993.88 and 58,858.55 is: 88,300.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,967.91 : 287,993.88 = 58,858.55 : x
  2. Step 2: Convert to fraction form
    191,967.91/287,993.88 = 58,858.55/x
  3. Step 3: Cross multiply
    191,967.91x = 287,993.88 × 58,858.55
  4. Step 4: Simplify right side
    191,967.91x = 16,950,901,825.68
  5. Step 5: Solve for x
    x = 16,950,901,825.68/191,967.91
  6. Step 6: Final answer
    x = 88,300.71

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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.