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Finding the Fourth Proportional to 127,776.78, 176,212.35 and 100,983.29

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Solution

The fourth proportional to 127,776.78, 176,212.35 and 100,983.29 is: 139,262.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,776.78 : 176,212.35 = 100,983.29 : x
  2. Step 2: Convert to fraction form
    127,776.78/176,212.35 = 100,983.29/x
  3. Step 3: Cross multiply
    127,776.78x = 176,212.35 × 100,983.29
  4. Step 4: Simplify right side
    127,776.78x = 17,794,503,282.16
  5. Step 5: Solve for x
    x = 17,794,503,282.16/127,776.78
  6. Step 6: Final answer
    x = 139,262.42

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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.