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Finding the Fourth Proportional to 331,466.40, 497,264.40 and 131,752.80

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Solution

The fourth proportional to 331,466.40, 497,264.40 and 131,752.80 is: 197,654.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,466.40 : 497,264.40 = 131,752.80 : x
  2. Step 2: Convert to fraction form
    331,466.40/497,264.40 = 131,752.80/x
  3. Step 3: Cross multiply
    331,466.40x = 497,264.40 × 131,752.80
  4. Step 4: Simplify right side
    331,466.40x = 65,515,977,040.32
  5. Step 5: Solve for x
    x = 65,515,977,040.32/331,466.40
  6. Step 6: Final answer
    x = 197,654.96

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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.