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Finding the Fourth Proportional to 403,228.20, 604,915.20 and 203,044.80

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Solution

The fourth proportional to 403,228.20, 604,915.20 and 203,044.80 is: 304,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,228.20 : 604,915.20 = 203,044.80 : x
  2. Step 2: Convert to fraction form
    403,228.20/604,915.20 = 203,044.80/x
  3. Step 3: Cross multiply
    403,228.20x = 604,915.20 × 203,044.80
  4. Step 4: Simplify right side
    403,228.20x = 122,824,885,800.96
  5. Step 5: Solve for x
    x = 122,824,885,800.96/403,228.20
  6. Step 6: Final answer
    x = 304,603.91

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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.