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Finding the Fourth Proportional to 125,706.15, 173,477.43 and 68,348.73

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Solution

The fourth proportional to 125,706.15, 173,477.43 and 68,348.73 is: 94,322.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,706.15 : 173,477.43 = 68,348.73 : x
  2. Step 2: Convert to fraction form
    125,706.15/173,477.43 = 68,348.73/x
  3. Step 3: Cross multiply
    125,706.15x = 173,477.43 × 68,348.73
  4. Step 4: Simplify right side
    125,706.15x = 11,856,962,024.16
  5. Step 5: Solve for x
    x = 11,856,962,024.16/125,706.15
  6. Step 6: Final answer
    x = 94,322.85

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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.