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Finding the Fourth Proportional to 201,962.06, 278,709.56 and 111,321.54

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Solution

The fourth proportional to 201,962.06, 278,709.56 and 111,321.54 is: 153,624.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,962.06 : 278,709.56 = 111,321.54 : x
  2. Step 2: Convert to fraction form
    201,962.06/278,709.56 = 111,321.54/x
  3. Step 3: Cross multiply
    201,962.06x = 278,709.56 × 111,321.54
  4. Step 4: Simplify right side
    201,962.06x = 31,026,377,292.77
  5. Step 5: Solve for x
    x = 31,026,377,292.77/201,962.06
  6. Step 6: Final answer
    x = 153,624.78

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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.