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Finding the Fourth Proportional to 125,074.56, 172,481.76 and 105,952.62

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Solution

The fourth proportional to 125,074.56, 172,481.76 and 105,952.62 is: 146,112.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,074.56 : 172,481.76 = 105,952.62 : x
  2. Step 2: Convert to fraction form
    125,074.56/172,481.76 = 105,952.62/x
  3. Step 3: Cross multiply
    125,074.56x = 172,481.76 × 105,952.62
  4. Step 4: Simplify right side
    125,074.56x = 18,274,894,374.21
  5. Step 5: Solve for x
    x = 18,274,894,374.21/125,074.56
  6. Step 6: Final answer
    x = 146,112.00

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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.