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Finding the Fourth Proportional to 107,173.33, 147,906 and 61,859.70

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Solution

The fourth proportional to 107,173.33, 147,906 and 61,859.70 is: 85,370.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,173.33 : 147,906 = 61,859.70 : x
  2. Step 2: Convert to fraction form
    107,173.33/147,906 = 61,859.70/x
  3. Step 3: Cross multiply
    107,173.33x = 147,906 × 61,859.70
  4. Step 4: Simplify right side
    107,173.33x = 9,149,420,788.20
  5. Step 5: Solve for x
    x = 9,149,420,788.20/107,173.33
  6. Step 6: Final answer
    x = 85,370.32

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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.