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Finding the Fourth Proportional to 125,245.49, 172,838.52 and 68,657.27

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Solution

The fourth proportional to 125,245.49, 172,838.52 and 68,657.27 is: 94,746.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,245.49 : 172,838.52 = 68,657.27 : x
  2. Step 2: Convert to fraction form
    125,245.49/172,838.52 = 68,657.27/x
  3. Step 3: Cross multiply
    125,245.49x = 172,838.52 × 68,657.27
  4. Step 4: Simplify right side
    125,245.49x = 11,866,620,069.85
  5. Step 5: Solve for x
    x = 11,866,620,069.85/125,245.49
  6. Step 6: Final answer
    x = 94,746.89

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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.