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Finding the Fourth Proportional to 113,820.70, 170,731.05 and 60,676.60

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Solution

The fourth proportional to 113,820.70, 170,731.05 and 60,676.60 is: 91,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,820.70 : 170,731.05 = 60,676.60 : x
  2. Step 2: Convert to fraction form
    113,820.70/170,731.05 = 60,676.60/x
  3. Step 3: Cross multiply
    113,820.70x = 170,731.05 × 60,676.60
  4. Step 4: Simplify right side
    113,820.70x = 10,359,379,628.43
  5. Step 5: Solve for x
    x = 10,359,379,628.43/113,820.70
  6. Step 6: Final answer
    x = 91,014.90

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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.