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Finding the Fourth Proportional to 141,640.80, 212,470.80 and 48,153.60

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Solution

The fourth proportional to 141,640.80, 212,470.80 and 48,153.60 is: 72,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,640.80 : 212,470.80 = 48,153.60 : x
  2. Step 2: Convert to fraction form
    141,640.80/212,470.80 = 48,153.60/x
  3. Step 3: Cross multiply
    141,640.80x = 212,470.80 × 48,153.60
  4. Step 4: Simplify right side
    141,640.80x = 10,231,233,914.88
  5. Step 5: Solve for x
    x = 10,231,233,914.88/141,640.80
  6. Step 6: Final answer
    x = 72,233.66

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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.