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Finding the Fourth Proportional to 123,955.44, 171,011.16 and 76,193.52

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Solution

The fourth proportional to 123,955.44, 171,011.16 and 76,193.52 is: 105,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,955.44 : 171,011.16 = 76,193.52 : x
  2. Step 2: Convert to fraction form
    123,955.44/171,011.16 = 76,193.52/x
  3. Step 3: Cross multiply
    123,955.44x = 171,011.16 × 76,193.52
  4. Step 4: Simplify right side
    123,955.44x = 13,029,942,239.68
  5. Step 5: Solve for x
    x = 13,029,942,239.68/123,955.44
  6. Step 6: Final answer
    x = 105,117.95

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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.