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Finding the Fourth Proportional to 199,390.89, 275,151.83 and 109,966.89

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Solution

The fourth proportional to 199,390.89, 275,151.83 and 109,966.89 is: 151,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,390.89 : 275,151.83 = 109,966.89 : x
  2. Step 2: Convert to fraction form
    199,390.89/275,151.83 = 109,966.89/x
  3. Step 3: Cross multiply
    199,390.89x = 275,151.83 × 109,966.89
  4. Step 4: Simplify right side
    199,390.89x = 30,257,590,473.07
  5. Step 5: Solve for x
    x = 30,257,590,473.07/199,390.89
  6. Step 6: Final answer
    x = 151,750.11

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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.