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Finding the Fourth Proportional to 125,211.86, 172,793.85 and 68,622.02

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Solution

The fourth proportional to 125,211.86, 172,793.85 and 68,622.02 is: 94,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,211.86 : 172,793.85 = 68,622.02 : x
  2. Step 2: Convert to fraction form
    125,211.86/172,793.85 = 68,622.02/x
  3. Step 3: Cross multiply
    125,211.86x = 172,793.85 × 68,622.02
  4. Step 4: Simplify right side
    125,211.86x = 11,857,463,030.58
  5. Step 5: Solve for x
    x = 11,857,463,030.58/125,211.86
  6. Step 6: Final answer
    x = 94,699.20

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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.