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Finding the Fourth Proportional to 201,922.60, 302,881.20 and 61,681.90

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Solution

The fourth proportional to 201,922.60, 302,881.20 and 61,681.90 is: 92,522.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,922.60 : 302,881.20 = 61,681.90 : x
  2. Step 2: Convert to fraction form
    201,922.60/302,881.20 = 61,681.90/x
  3. Step 3: Cross multiply
    201,922.60x = 302,881.20 × 61,681.90
  4. Step 4: Simplify right side
    201,922.60x = 18,682,287,890.28
  5. Step 5: Solve for x
    x = 18,682,287,890.28/201,922.60
  6. Step 6: Final answer
    x = 92,522.03

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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.