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Finding the Fourth Proportional to 111,911.10, 167,866.65 and 97,331.10

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Solution

The fourth proportional to 111,911.10, 167,866.65 and 97,331.10 is: 145,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,911.10 : 167,866.65 = 97,331.10 : x
  2. Step 2: Convert to fraction form
    111,911.10/167,866.65 = 97,331.10/x
  3. Step 3: Cross multiply
    111,911.10x = 167,866.65 × 97,331.10
  4. Step 4: Simplify right side
    111,911.10x = 16,338,645,697.82
  5. Step 5: Solve for x
    x = 16,338,645,697.82/111,911.10
  6. Step 6: Final answer
    x = 145,996.65

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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.