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Finding the Fourth Proportional to 107,449.70, 148,293.53 and 62,138.82

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Solution

The fourth proportional to 107,449.70, 148,293.53 and 62,138.82 is: 85,759.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,449.70 : 148,293.53 = 62,138.82 : x
  2. Step 2: Convert to fraction form
    107,449.70/148,293.53 = 62,138.82/x
  3. Step 3: Cross multiply
    107,449.70x = 148,293.53 × 62,138.82
  4. Step 4: Simplify right side
    107,449.70x = 9,214,784,657.14
  5. Step 5: Solve for x
    x = 9,214,784,657.14/107,449.70
  6. Step 6: Final answer
    x = 85,759.06

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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.