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Finding the Fourth Proportional to 473,676.80, 710,515.20 and 399,027.20

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Solution

The fourth proportional to 473,676.80, 710,515.20 and 399,027.20 is: 598,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,676.80 : 710,515.20 = 399,027.20 : x
  2. Step 2: Convert to fraction form
    473,676.80/710,515.20 = 399,027.20/x
  3. Step 3: Cross multiply
    473,676.80x = 710,515.20 × 399,027.20
  4. Step 4: Simplify right side
    473,676.80x = 283,514,890,813.44
  5. Step 5: Solve for x
    x = 283,514,890,813.44/473,676.80
  6. Step 6: Final answer
    x = 598,540.80

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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.