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Finding the Fourth Proportional to 191,619.69, 287,474.03 and 65,261.03

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Solution

The fourth proportional to 191,619.69, 287,474.03 and 65,261.03 is: 97,906.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,619.69 : 287,474.03 = 65,261.03 : x
  2. Step 2: Convert to fraction form
    191,619.69/287,474.03 = 65,261.03/x
  3. Step 3: Cross multiply
    191,619.69x = 287,474.03 × 65,261.03
  4. Step 4: Simplify right side
    191,619.69x = 18,760,850,371.49
  5. Step 5: Solve for x
    x = 18,760,850,371.49/191,619.69
  6. Step 6: Final answer
    x = 97,906.69

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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.