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Finding the Fourth Proportional to 141,243, 194,932.62 and 81,627

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Solution

The fourth proportional to 141,243, 194,932.62 and 81,627 is: 112,655.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,243 : 194,932.62 = 81,627 : x
  2. Step 2: Convert to fraction form
    141,243/194,932.62 = 81,627/x
  3. Step 3: Cross multiply
    141,243x = 194,932.62 × 81,627
  4. Step 4: Simplify right side
    141,243x = 15,911,764,972.74
  5. Step 5: Solve for x
    x = 15,911,764,972.74/141,243
  6. Step 6: Final answer
    x = 112,655.25

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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.