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Finding the Fourth Proportional to 84,644.51, 127,184.72 and 63,781.29

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Solution

The fourth proportional to 84,644.51, 127,184.72 and 63,781.29 is: 95,836.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,644.51 : 127,184.72 = 63,781.29 : x
  2. Step 2: Convert to fraction form
    84,644.51/127,184.72 = 63,781.29/x
  3. Step 3: Cross multiply
    84,644.51x = 127,184.72 × 63,781.29
  4. Step 4: Simplify right side
    84,644.51x = 8,112,005,190.98
  5. Step 5: Solve for x
    x = 8,112,005,190.98/84,644.51
  6. Step 6: Final answer
    x = 95,836.17

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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.