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Finding the Fourth Proportional to 126,153.66, 189,361.71 and 92,911.26

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Solution

The fourth proportional to 126,153.66, 189,361.71 and 92,911.26 is: 139,463.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,153.66 : 189,361.71 = 92,911.26 : x
  2. Step 2: Convert to fraction form
    126,153.66/189,361.71 = 92,911.26/x
  3. Step 3: Cross multiply
    126,153.66x = 189,361.71 × 92,911.26
  4. Step 4: Simplify right side
    126,153.66x = 17,593,835,071.85
  5. Step 5: Solve for x
    x = 17,593,835,071.85/126,153.66
  6. Step 6: Final answer
    x = 139,463.53

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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.