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Finding the Fourth Proportional to 125,509.78, 173,204.70 and 68,922.34

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Solution

The fourth proportional to 125,509.78, 173,204.70 and 68,922.34 is: 95,113.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,509.78 : 173,204.70 = 68,922.34 : x
  2. Step 2: Convert to fraction form
    125,509.78/173,204.70 = 68,922.34/x
  3. Step 3: Cross multiply
    125,509.78x = 173,204.70 × 68,922.34
  4. Step 4: Simplify right side
    125,509.78x = 11,937,673,223.00
  5. Step 5: Solve for x
    x = 11,937,673,223.00/125,509.78
  6. Step 6: Final answer
    x = 95,113.49

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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.