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Finding the Fourth Proportional to 141,989.02, 212,768.02 and 104,369.90

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Solution

The fourth proportional to 141,989.02, 212,768.02 and 104,369.90 is: 156,396.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,989.02 : 212,768.02 = 104,369.90 : x
  2. Step 2: Convert to fraction form
    141,989.02/212,768.02 = 104,369.90/x
  3. Step 3: Cross multiply
    141,989.02x = 212,768.02 × 104,369.90
  4. Step 4: Simplify right side
    141,989.02x = 22,206,576,970.60
  5. Step 5: Solve for x
    x = 22,206,576,970.60/141,989.02
  6. Step 6: Final answer
    x = 156,396.44

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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.