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Finding the Fourth Proportional to 201,996.18, 278,758.26 and 111,351.60

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Solution

The fourth proportional to 201,996.18, 278,758.26 and 111,351.60 is: 153,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,996.18 : 278,758.26 = 111,351.60 : x
  2. Step 2: Convert to fraction form
    201,996.18/278,758.26 = 111,351.60/x
  3. Step 3: Cross multiply
    201,996.18x = 278,758.26 × 111,351.60
  4. Step 4: Simplify right side
    201,996.18x = 31,040,178,264.22
  5. Step 5: Solve for x
    x = 31,040,178,264.22/201,996.18
  6. Step 6: Final answer
    x = 153,667.15

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1.5x scale

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.