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Finding the Fourth Proportional to 141,768.60, 212,652.90 and 133,020.60

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Solution

The fourth proportional to 141,768.60, 212,652.90 and 133,020.60 is: 199,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,768.60 : 212,652.90 = 133,020.60 : x
  2. Step 2: Convert to fraction form
    141,768.60/212,652.90 = 133,020.60/x
  3. Step 3: Cross multiply
    141,768.60x = 212,652.90 × 133,020.60
  4. Step 4: Simplify right side
    141,768.60x = 28,287,216,349.74
  5. Step 5: Solve for x
    x = 28,287,216,349.74/141,768.60
  6. Step 6: Final answer
    x = 199,530.90

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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.