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Finding the Fourth Proportional to 489,937.85, 733,623.73 and 320,926.49

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Solution

The fourth proportional to 489,937.85, 733,623.73 and 320,926.49 is: 480,549.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,937.85 : 733,623.73 = 320,926.49 : x
  2. Step 2: Convert to fraction form
    489,937.85/733,623.73 = 320,926.49/x
  3. Step 3: Cross multiply
    489,937.85x = 733,623.73 × 320,926.49
  4. Step 4: Simplify right side
    489,937.85x = 235,439,288,735.47
  5. Step 5: Solve for x
    x = 235,439,288,735.47/489,937.85
  6. Step 6: Final answer
    x = 480,549.30

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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.