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Finding the Fourth Proportional to 201,774.93, 278,445.97 and 111,139.37

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Solution

The fourth proportional to 201,774.93, 278,445.97 and 111,139.37 is: 153,370.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,774.93 : 278,445.97 = 111,139.37 : x
  2. Step 2: Convert to fraction form
    201,774.93/278,445.97 = 111,139.37/x
  3. Step 3: Cross multiply
    201,774.93x = 278,445.97 × 111,139.37
  4. Step 4: Simplify right side
    201,774.93x = 30,946,309,684.84
  5. Step 5: Solve for x
    x = 30,946,309,684.84/201,774.93
  6. Step 6: Final answer
    x = 153,370.44

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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.