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Finding the Fourth Proportional to 624,388.80, 935,200.80 and 513,796.80

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Solution

The fourth proportional to 624,388.80, 935,200.80 and 513,796.80 is: 769,557.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,388.80 : 935,200.80 = 513,796.80 : x
  2. Step 2: Convert to fraction form
    624,388.80/935,200.80 = 513,796.80/x
  3. Step 3: Cross multiply
    624,388.80x = 935,200.80 × 513,796.80
  4. Step 4: Simplify right side
    624,388.80x = 480,503,178,397.44
  5. Step 5: Solve for x
    x = 480,503,178,397.44/624,388.80
  6. Step 6: Final answer
    x = 769,557.65

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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.