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Finding the Fourth Proportional to 201,768.90, 278,420.48 and 124,232.24

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Solution

The fourth proportional to 201,768.90, 278,420.48 and 124,232.24 is: 171,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,768.90 : 278,420.48 = 124,232.24 : x
  2. Step 2: Convert to fraction form
    201,768.90/278,420.48 = 124,232.24/x
  3. Step 3: Cross multiply
    201,768.90x = 278,420.48 × 124,232.24
  4. Step 4: Simplify right side
    201,768.90x = 34,588,797,879.01
  5. Step 5: Solve for x
    x = 34,588,797,879.01/201,768.90
  6. Step 6: Final answer
    x = 171,427.80

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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.