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Finding the Fourth Proportional to 127,991.52, 176,546.04 and 77,690.52

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Solution

The fourth proportional to 127,991.52, 176,546.04 and 77,690.52 is: 107,162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,991.52 : 176,546.04 = 77,690.52 : x
  2. Step 2: Convert to fraction form
    127,991.52/176,546.04 = 77,690.52/x
  3. Step 3: Cross multiply
    127,991.52x = 176,546.04 × 77,690.52
  4. Step 4: Simplify right side
    127,991.52x = 13,715,953,651.54
  5. Step 5: Solve for x
    x = 13,715,953,651.54/127,991.52
  6. Step 6: Final answer
    x = 107,162.99

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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.