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Finding the Fourth Proportional to 623,604.40, 860,553.12 and 394,285.12

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Solution

The fourth proportional to 623,604.40, 860,553.12 and 394,285.12 is: 544,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,604.40 : 860,553.12 = 394,285.12 : x
  2. Step 2: Convert to fraction form
    623,604.40/860,553.12 = 394,285.12/x
  3. Step 3: Cross multiply
    623,604.40x = 860,553.12 × 394,285.12
  4. Step 4: Simplify right side
    623,604.40x = 339,303,290,185.57
  5. Step 5: Solve for x
    x = 339,303,290,185.57/623,604.40
  6. Step 6: Final answer
    x = 544,100.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.