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Finding the Fourth Proportional to 167,410.86, 231,028.70 and 90,930.71

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Solution

The fourth proportional to 167,410.86, 231,028.70 and 90,930.71 is: 125,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,410.86 : 231,028.70 = 90,930.71 : x
  2. Step 2: Convert to fraction form
    167,410.86/231,028.70 = 90,930.71/x
  3. Step 3: Cross multiply
    167,410.86x = 231,028.70 × 90,930.71
  4. Step 4: Simplify right side
    167,410.86x = 21,007,602,111.58
  5. Step 5: Solve for x
    x = 21,007,602,111.58/167,410.86
  6. Step 6: Final answer
    x = 125,485.30

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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.