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Finding the Fourth Proportional to 201,676.79, 278,303.41 and 111,015.05

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Solution

The fourth proportional to 201,676.79, 278,303.41 and 111,015.05 is: 153,194.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,676.79 : 278,303.41 = 111,015.05 : x
  2. Step 2: Convert to fraction form
    201,676.79/278,303.41 = 111,015.05/x
  3. Step 3: Cross multiply
    201,676.79x = 278,303.41 × 111,015.05
  4. Step 4: Simplify right side
    201,676.79x = 30,895,867,394.54
  5. Step 5: Solve for x
    x = 30,895,867,394.54/201,676.79
  6. Step 6: Final answer
    x = 153,194.96

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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.