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Finding the Fourth Proportional to 109,995.44, 151,795.86 and 71,779.44

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Solution

The fourth proportional to 109,995.44, 151,795.86 and 71,779.44 is: 99,057.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,995.44 : 151,795.86 = 71,779.44 : x
  2. Step 2: Convert to fraction form
    109,995.44/151,795.86 = 71,779.44/x
  3. Step 3: Cross multiply
    109,995.44x = 151,795.86 × 71,779.44
  4. Step 4: Simplify right side
    109,995.44x = 10,895,821,825.12
  5. Step 5: Solve for x
    x = 10,895,821,825.12/109,995.44
  6. Step 6: Final answer
    x = 99,057.03

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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.