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Finding the Fourth Proportional to 199,643.01, 275,631.71 and 127,086.86

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Solution

The fourth proportional to 199,643.01, 275,631.71 and 127,086.86 is: 175,459.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,643.01 : 275,631.71 = 127,086.86 : x
  2. Step 2: Convert to fraction form
    199,643.01/275,631.71 = 127,086.86/x
  3. Step 3: Cross multiply
    199,643.01x = 275,631.71 × 127,086.86
  4. Step 4: Simplify right side
    199,643.01x = 35,029,168,540.33
  5. Step 5: Solve for x
    x = 35,029,168,540.33/199,643.01
  6. Step 6: Final answer
    x = 175,459.03

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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.