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Finding the Fourth Proportional to 203,916.30, 305,874.45 and 124,200.15

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Solution

The fourth proportional to 203,916.30, 305,874.45 and 124,200.15 is: 186,300.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,916.30 : 305,874.45 = 124,200.15 : x
  2. Step 2: Convert to fraction form
    203,916.30/305,874.45 = 124,200.15/x
  3. Step 3: Cross multiply
    203,916.30x = 305,874.45 × 124,200.15
  4. Step 4: Simplify right side
    203,916.30x = 37,989,652,571.17
  5. Step 5: Solve for x
    x = 37,989,652,571.17/203,916.30
  6. Step 6: Final answer
    x = 186,300.23

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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.