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Finding the Fourth Proportional to 191,498.56, 287,379.04 and 66,839.52

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Solution

The fourth proportional to 191,498.56, 287,379.04 and 66,839.52 is: 100,305.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,498.56 : 287,379.04 = 66,839.52 : x
  2. Step 2: Convert to fraction form
    191,498.56/287,379.04 = 66,839.52/x
  3. Step 3: Cross multiply
    191,498.56x = 287,379.04 × 66,839.52
  4. Step 4: Simplify right side
    191,498.56x = 19,208,277,091.66
  5. Step 5: Solve for x
    x = 19,208,277,091.66/191,498.56
  6. Step 6: Final answer
    x = 100,305.07

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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.