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Finding the Fourth Proportional to 47,900.61, 66,104.88 and 26,679.88

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Solution

The fourth proportional to 47,900.61, 66,104.88 and 26,679.88 is: 36,819.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,900.61 : 66,104.88 = 26,679.88 : x
  2. Step 2: Convert to fraction form
    47,900.61/66,104.88 = 26,679.88/x
  3. Step 3: Cross multiply
    47,900.61x = 66,104.88 × 26,679.88
  4. Step 4: Simplify right side
    47,900.61x = 1,763,670,265.81
  5. Step 5: Solve for x
    x = 1,763,670,265.81/47,900.61
  6. Step 6: Final answer
    x = 36,819.37

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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.