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Finding the Fourth Proportional to 199,508.56, 275,321.68 and 127,888.56

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Solution

The fourth proportional to 199,508.56, 275,321.68 and 127,888.56 is: 176,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,508.56 : 275,321.68 = 127,888.56 : x
  2. Step 2: Convert to fraction form
    199,508.56/275,321.68 = 127,888.56/x
  3. Step 3: Cross multiply
    199,508.56x = 275,321.68 × 127,888.56
  4. Step 4: Simplify right side
    199,508.56x = 35,210,493,191.98
  5. Step 5: Solve for x
    x = 35,210,493,191.98/199,508.56
  6. Step 6: Final answer
    x = 176,486.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.