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Finding the Fourth Proportional to 201,576.62, 302,392.72 and 68,421.12

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Solution

The fourth proportional to 201,576.62, 302,392.72 and 68,421.12 is: 102,641.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,576.62 : 302,392.72 = 68,421.12 : x
  2. Step 2: Convert to fraction form
    201,576.62/302,392.72 = 68,421.12/x
  3. Step 3: Cross multiply
    201,576.62x = 302,392.72 × 68,421.12
  4. Step 4: Simplify right side
    201,576.62x = 20,690,048,582.25
  5. Step 5: Solve for x
    x = 20,690,048,582.25/201,576.62
  6. Step 6: Final answer
    x = 102,641.11

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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.