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Finding the Fourth Proportional to 201,999.94, 278,759.20 and 117,165.40

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Solution

The fourth proportional to 201,999.94, 278,759.20 and 117,165.40 is: 161,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,999.94 : 278,759.20 = 117,165.40 : x
  2. Step 2: Convert to fraction form
    201,999.94/278,759.20 = 117,165.40/x
  3. Step 3: Cross multiply
    201,999.94x = 278,759.20 × 117,165.40
  4. Step 4: Simplify right side
    201,999.94x = 32,660,933,171.68
  5. Step 5: Solve for x
    x = 32,660,933,171.68/201,999.94
  6. Step 6: Final answer
    x = 161,687.84

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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.