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Finding the Fourth Proportional to 113,601.84, 156,770.68 and 65,882.90

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Solution

The fourth proportional to 113,601.84, 156,770.68 and 65,882.90 is: 90,918.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,601.84 : 156,770.68 = 65,882.90 : x
  2. Step 2: Convert to fraction form
    113,601.84/156,770.68 = 65,882.90/x
  3. Step 3: Cross multiply
    113,601.84x = 156,770.68 × 65,882.90
  4. Step 4: Simplify right side
    113,601.84x = 10,328,507,033.37
  5. Step 5: Solve for x
    x = 10,328,507,033.37/113,601.84
  6. Step 6: Final answer
    x = 90,918.48

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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.