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Finding the Fourth Proportional to 136,361.49, 188,179.07 and 75,943.77

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Solution

The fourth proportional to 136,361.49, 188,179.07 and 75,943.77 is: 104,802.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,361.49 : 188,179.07 = 75,943.77 : x
  2. Step 2: Convert to fraction form
    136,361.49/188,179.07 = 75,943.77/x
  3. Step 3: Cross multiply
    136,361.49x = 188,179.07 × 75,943.77
  4. Step 4: Simplify right side
    136,361.49x = 14,291,027,631.18
  5. Step 5: Solve for x
    x = 14,291,027,631.18/136,361.49
  6. Step 6: Final answer
    x = 104,802.52

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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.