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Finding the Fourth Proportional to 482,861.40, 724,292.10 and 383,328.60

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Solution

The fourth proportional to 482,861.40, 724,292.10 and 383,328.60 is: 574,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,861.40 : 724,292.10 = 383,328.60 : x
  2. Step 2: Convert to fraction form
    482,861.40/724,292.10 = 383,328.60/x
  3. Step 3: Cross multiply
    482,861.40x = 724,292.10 × 383,328.60
  4. Step 4: Simplify right side
    482,861.40x = 277,641,876,684.06
  5. Step 5: Solve for x
    x = 277,641,876,684.06/482,861.40
  6. Step 6: Final answer
    x = 574,992.90

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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.