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Finding the Fourth Proportional to 166,863.76, 230,268.90 and 91,411.72

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Solution

The fourth proportional to 166,863.76, 230,268.90 and 91,411.72 is: 126,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,863.76 : 230,268.90 = 91,411.72 : x
  2. Step 2: Convert to fraction form
    166,863.76/230,268.90 = 91,411.72/x
  3. Step 3: Cross multiply
    166,863.76x = 230,268.90 × 91,411.72
  4. Step 4: Simplify right side
    166,863.76x = 21,049,276,211.51
  5. Step 5: Solve for x
    x = 21,049,276,211.51/166,863.76
  6. Step 6: Final answer
    x = 126,146.48

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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.