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Finding the Fourth Proportional to 203,672.38, 281,060.49 and 113,032.30

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Solution

The fourth proportional to 203,672.38, 281,060.49 and 113,032.30 is: 155,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,672.38 : 281,060.49 = 113,032.30 : x
  2. Step 2: Convert to fraction form
    203,672.38/281,060.49 = 113,032.30/x
  3. Step 3: Cross multiply
    203,672.38x = 281,060.49 × 113,032.30
  4. Step 4: Simplify right side
    203,672.38x = 31,768,913,623.83
  5. Step 5: Solve for x
    x = 31,768,913,623.83/203,672.38
  6. Step 6: Final answer
    x = 155,980.47

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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.