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Finding the Fourth Proportional to 125,213.82, 172,794.74 and 67,854.74

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Solution

The fourth proportional to 125,213.82, 172,794.74 and 67,854.74 is: 93,639.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,213.82 : 172,794.74 = 67,854.74 : x
  2. Step 2: Convert to fraction form
    125,213.82/172,794.74 = 67,854.74/x
  3. Step 3: Cross multiply
    125,213.82x = 172,794.74 × 67,854.74
  4. Step 4: Simplify right side
    125,213.82x = 11,724,942,156.07
  5. Step 5: Solve for x
    x = 11,724,942,156.07/125,213.82
  6. Step 6: Final answer
    x = 93,639.36

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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.