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Finding the Fourth Proportional to 497,534.40, 746,609.40 and 261,046.80

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Solution

The fourth proportional to 497,534.40, 746,609.40 and 261,046.80 is: 391,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,534.40 : 746,609.40 = 261,046.80 : x
  2. Step 2: Convert to fraction form
    497,534.40/746,609.40 = 261,046.80/x
  3. Step 3: Cross multiply
    497,534.40x = 746,609.40 × 261,046.80
  4. Step 4: Simplify right side
    497,534.40x = 194,899,994,719.92
  5. Step 5: Solve for x
    x = 194,899,994,719.92/497,534.40
  6. Step 6: Final answer
    x = 391,731.70

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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.