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Finding the Fourth Proportional to 125,351.85, 172,975.26 and 68,763.23

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Solution

The fourth proportional to 125,351.85, 172,975.26 and 68,763.23 is: 94,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,351.85 : 172,975.26 = 68,763.23 : x
  2. Step 2: Convert to fraction form
    125,351.85/172,975.26 = 68,763.23/x
  3. Step 3: Cross multiply
    125,351.85x = 172,975.26 × 68,763.23
  4. Step 4: Simplify right side
    125,351.85x = 11,894,336,722.81
  5. Step 5: Solve for x
    x = 11,894,336,722.81/125,351.85
  6. Step 6: Final answer
    x = 94,887.60

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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.