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Finding the Fourth Proportional to 482,691.12, 666,021.20 and 276,025.04

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Solution

The fourth proportional to 482,691.12, 666,021.20 and 276,025.04 is: 380,861.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,691.12 : 666,021.20 = 276,025.04 : x
  2. Step 2: Convert to fraction form
    482,691.12/666,021.20 = 276,025.04/x
  3. Step 3: Cross multiply
    482,691.12x = 666,021.20 × 276,025.04
  4. Step 4: Simplify right side
    482,691.12x = 183,838,528,370.85
  5. Step 5: Solve for x
    x = 183,838,528,370.85/482,691.12
  6. Step 6: Final answer
    x = 380,861.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.