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Finding the Fourth Proportional to 116,236.90, 174,189 and 66,213.76

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Solution

The fourth proportional to 116,236.90, 174,189 and 66,213.76 is: 99,225.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,236.90 : 174,189 = 66,213.76 : x
  2. Step 2: Convert to fraction form
    116,236.90/174,189 = 66,213.76/x
  3. Step 3: Cross multiply
    116,236.90x = 174,189 × 66,213.76
  4. Step 4: Simplify right side
    116,236.90x = 11,533,708,640.64
  5. Step 5: Solve for x
    x = 11,533,708,640.64/116,236.90
  6. Step 6: Final answer
    x = 99,225.88

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1.5x scale

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.