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Finding the Fourth Proportional to 113,137.56, 156,094.68 and 65,373.48

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Solution

The fourth proportional to 113,137.56, 156,094.68 and 65,373.48 is: 90,195.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,137.56 : 156,094.68 = 65,373.48 : x
  2. Step 2: Convert to fraction form
    113,137.56/156,094.68 = 65,373.48/x
  3. Step 3: Cross multiply
    113,137.56x = 156,094.68 × 65,373.48
  4. Step 4: Simplify right side
    113,137.56x = 10,204,452,441.09
  5. Step 5: Solve for x
    x = 10,204,452,441.09/113,137.56
  6. Step 6: Final answer
    x = 90,195.09

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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.