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Finding the Fourth Proportional to 201,928.60, 302,890.20 and 61,687.90

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Solution

The fourth proportional to 201,928.60, 302,890.20 and 61,687.90 is: 92,531.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,928.60 : 302,890.20 = 61,687.90 : x
  2. Step 2: Convert to fraction form
    201,928.60/302,890.20 = 61,687.90/x
  3. Step 3: Cross multiply
    201,928.60x = 302,890.20 × 61,687.90
  4. Step 4: Simplify right side
    201,928.60x = 18,684,660,368.58
  5. Step 5: Solve for x
    x = 18,684,660,368.58/201,928.60
  6. Step 6: Final answer
    x = 92,531.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.