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Finding the Fourth Proportional to 111,412.62, 167,225.06 and 69,164.86

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Solution

The fourth proportional to 111,412.62, 167,225.06 and 69,164.86 is: 103,813.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,412.62 : 167,225.06 = 69,164.86 : x
  2. Step 2: Convert to fraction form
    111,412.62/167,225.06 = 69,164.86/x
  3. Step 3: Cross multiply
    111,412.62x = 167,225.06 × 69,164.86
  4. Step 4: Simplify right side
    111,412.62x = 11,566,097,863.39
  5. Step 5: Solve for x
    x = 11,566,097,863.39/111,412.62
  6. Step 6: Final answer
    x = 103,813.18

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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.