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Finding the Fourth Proportional to 201,879.88, 278,590.59 and 111,244.25

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Solution

The fourth proportional to 201,879.88, 278,590.59 and 111,244.25 is: 153,515.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,879.88 : 278,590.59 = 111,244.25 : x
  2. Step 2: Convert to fraction form
    201,879.88/278,590.59 = 111,244.25/x
  3. Step 3: Cross multiply
    201,879.88x = 278,590.59 × 111,244.25
  4. Step 4: Simplify right side
    201,879.88x = 30,991,601,938.08
  5. Step 5: Solve for x
    x = 30,991,601,938.08/201,879.88
  6. Step 6: Final answer
    x = 153,515.06

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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.