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Finding the Fourth Proportional to 125,297.46, 172,910.52 and 68,710.02

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Solution

The fourth proportional to 125,297.46, 172,910.52 and 68,710.02 is: 94,819.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,297.46 : 172,910.52 = 68,710.02 : x
  2. Step 2: Convert to fraction form
    125,297.46/172,910.52 = 68,710.02/x
  3. Step 3: Cross multiply
    125,297.46x = 172,910.52 × 68,710.02
  4. Step 4: Simplify right side
    125,297.46x = 11,880,685,287.41
  5. Step 5: Solve for x
    x = 11,880,685,287.41/125,297.46
  6. Step 6: Final answer
    x = 94,819.84

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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.