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Finding the Fourth Proportional to 111,207.60, 166,823.55 and 107,708.40

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Solution

The fourth proportional to 111,207.60, 166,823.55 and 107,708.40 is: 161,574.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,207.60 : 166,823.55 = 107,708.40 : x
  2. Step 2: Convert to fraction form
    111,207.60/166,823.55 = 107,708.40/x
  3. Step 3: Cross multiply
    111,207.60x = 166,823.55 × 107,708.40
  4. Step 4: Simplify right side
    111,207.60x = 17,968,297,652.82
  5. Step 5: Solve for x
    x = 17,968,297,652.82/111,207.60
  6. Step 6: Final answer
    x = 161,574.37

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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.