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Finding the Fourth Proportional to 125,263.53, 172,874.52 and 68,685.84

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Solution

The fourth proportional to 125,263.53, 172,874.52 and 68,685.84 is: 94,792.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,263.53 : 172,874.52 = 68,685.84 : x
  2. Step 2: Convert to fraction form
    125,263.53/172,874.52 = 68,685.84/x
  3. Step 3: Cross multiply
    125,263.53x = 172,874.52 × 68,685.84
  4. Step 4: Simplify right side
    125,263.53x = 11,874,031,620.80
  5. Step 5: Solve for x
    x = 11,874,031,620.80/125,263.53
  6. Step 6: Final answer
    x = 94,792.41

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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.