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Finding the Fourth Proportional to 111,054.60, 166,254.66 and 71,494.20

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Solution

The fourth proportional to 111,054.60, 166,254.66 and 71,494.20 is: 107,030.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,054.60 : 166,254.66 = 71,494.20 : x
  2. Step 2: Convert to fraction form
    111,054.60/166,254.66 = 71,494.20/x
  3. Step 3: Cross multiply
    111,054.60x = 166,254.66 × 71,494.20
  4. Step 4: Simplify right side
    111,054.60x = 11,886,243,912.97
  5. Step 5: Solve for x
    x = 11,886,243,912.97/111,054.60
  6. Step 6: Final answer
    x = 107,030.63

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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.