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Finding the Fourth Proportional to 166,989.88, 230,446.84 and 99,921.88

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Solution

The fourth proportional to 166,989.88, 230,446.84 and 99,921.88 is: 137,892.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,989.88 : 230,446.84 = 99,921.88 : x
  2. Step 2: Convert to fraction form
    166,989.88/230,446.84 = 99,921.88/x
  3. Step 3: Cross multiply
    166,989.88x = 230,446.84 × 99,921.88
  4. Step 4: Simplify right side
    166,989.88x = 23,026,680,340.63
  5. Step 5: Solve for x
    x = 23,026,680,340.63/166,989.88
  6. Step 6: Final answer
    x = 137,892.67

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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.