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Finding the Fourth Proportional to 113,621.34, 156,797.62 and 65,902.44

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Solution

The fourth proportional to 113,621.34, 156,797.62 and 65,902.44 is: 90,945.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,621.34 : 156,797.62 = 65,902.44 : x
  2. Step 2: Convert to fraction form
    113,621.34/156,797.62 = 65,902.44/x
  3. Step 3: Cross multiply
    113,621.34x = 156,797.62 × 65,902.44
  4. Step 4: Simplify right side
    113,621.34x = 10,333,345,744.19
  5. Step 5: Solve for x
    x = 10,333,345,744.19/113,621.34
  6. Step 6: Final answer
    x = 90,945.47

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1.5x scale

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.