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Finding the Fourth Proportional to 231,641.16, 347,512.80 and 131,848.38

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Solution

The fourth proportional to 231,641.16, 347,512.80 and 131,848.38 is: 197,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,641.16 : 347,512.80 = 131,848.38 : x
  2. Step 2: Convert to fraction form
    231,641.16/347,512.80 = 131,848.38/x
  3. Step 3: Cross multiply
    231,641.16x = 347,512.80 × 131,848.38
  4. Step 4: Simplify right side
    231,641.16x = 45,818,999,709.26
  5. Step 5: Solve for x
    x = 45,818,999,709.26/231,641.16
  6. Step 6: Final answer
    x = 197,801.63

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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.