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Finding the Fourth Proportional to 67,214.76, 100,711.20 and 39,055.77

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Solution

The fourth proportional to 67,214.76, 100,711.20 and 39,055.77 is: 58,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,214.76 : 100,711.20 = 39,055.77 : x
  2. Step 2: Convert to fraction form
    67,214.76/100,711.20 = 39,055.77/x
  3. Step 3: Cross multiply
    67,214.76x = 100,711.20 × 39,055.77
  4. Step 4: Simplify right side
    67,214.76x = 3,933,353,390.39
  5. Step 5: Solve for x
    x = 3,933,353,390.39/67,214.76
  6. Step 6: Final answer
    x = 58,519.19

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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.