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Finding the Fourth Proportional to 497,540.40, 746,618.40 and 261,052.80

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Solution

The fourth proportional to 497,540.40, 746,618.40 and 261,052.80 is: 391,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,540.40 : 746,618.40 = 261,052.80 : x
  2. Step 2: Convert to fraction form
    497,540.40/746,618.40 = 261,052.80/x
  3. Step 3: Cross multiply
    497,540.40x = 746,618.40 × 261,052.80
  4. Step 4: Simplify right side
    497,540.40x = 194,906,823,851.52
  5. Step 5: Solve for x
    x = 194,906,823,851.52/497,540.40
  6. Step 6: Final answer
    x = 391,740.70

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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.