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Finding the Fourth Proportional to 201,894.93, 278,627.34 and 111,250.90

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Solution

The fourth proportional to 201,894.93, 278,627.34 and 111,250.90 is: 153,533.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,894.93 : 278,627.34 = 111,250.90 : x
  2. Step 2: Convert to fraction form
    201,894.93/278,627.34 = 111,250.90/x
  3. Step 3: Cross multiply
    201,894.93x = 278,627.34 × 111,250.90
  4. Step 4: Simplify right side
    201,894.93x = 30,997,543,105.08
  5. Step 5: Solve for x
    x = 30,997,543,105.08/201,894.93
  6. Step 6: Final answer
    x = 153,533.04

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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.