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Finding the Fourth Proportional to 53,138.70, 79,708.05 and 44,682.30

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Solution

The fourth proportional to 53,138.70, 79,708.05 and 44,682.30 is: 67,023.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,138.70 : 79,708.05 = 44,682.30 : x
  2. Step 2: Convert to fraction form
    53,138.70/79,708.05 = 44,682.30/x
  3. Step 3: Cross multiply
    53,138.70x = 79,708.05 × 44,682.30
  4. Step 4: Simplify right side
    53,138.70x = 3,561,539,002.52
  5. Step 5: Solve for x
    x = 3,561,539,002.52/53,138.70
  6. Step 6: Final answer
    x = 67,023.45

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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.