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Finding the Fourth Proportional to 125,055.62, 172,576.76 and 68,467

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Solution

The fourth proportional to 125,055.62, 172,576.76 and 68,467 is: 94,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,055.62 : 172,576.76 = 68,467 : x
  2. Step 2: Convert to fraction form
    125,055.62/172,576.76 = 68,467/x
  3. Step 3: Cross multiply
    125,055.62x = 172,576.76 × 68,467
  4. Step 4: Simplify right side
    125,055.62x = 11,815,813,026.92
  5. Step 5: Solve for x
    x = 11,815,813,026.92/125,055.62
  6. Step 6: Final answer
    x = 94,484.46

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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.