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Finding the Fourth Proportional to 70,620.53, 105,930.86 and 49,654.35

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Solution

The fourth proportional to 70,620.53, 105,930.86 and 49,654.35 is: 74,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,620.53 : 105,930.86 = 49,654.35 : x
  2. Step 2: Convert to fraction form
    70,620.53/105,930.86 = 49,654.35/x
  3. Step 3: Cross multiply
    70,620.53x = 105,930.86 × 49,654.35
  4. Step 4: Simplify right side
    70,620.53x = 5,259,927,749.97
  5. Step 5: Solve for x
    x = 5,259,927,749.97/70,620.53
  6. Step 6: Final answer
    x = 74,481.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.