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Finding the Fourth Proportional to 123,796.53, 170,838.74 and 67,207.89

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Solution

The fourth proportional to 123,796.53, 170,838.74 and 67,207.89 is: 92,746.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,796.53 : 170,838.74 = 67,207.89 : x
  2. Step 2: Convert to fraction form
    123,796.53/170,838.74 = 67,207.89/x
  3. Step 3: Cross multiply
    123,796.53x = 170,838.74 × 67,207.89
  4. Step 4: Simplify right side
    123,796.53x = 11,481,710,909.62
  5. Step 5: Solve for x
    x = 11,481,710,909.62/123,796.53
  6. Step 6: Final answer
    x = 92,746.63

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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.