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Finding the Fourth Proportional to 405,937.60, 608,906.40 and 195,596.80

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Solution

The fourth proportional to 405,937.60, 608,906.40 and 195,596.80 is: 293,395.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,937.60 : 608,906.40 = 195,596.80 : x
  2. Step 2: Convert to fraction form
    405,937.60/608,906.40 = 195,596.80/x
  3. Step 3: Cross multiply
    405,937.60x = 608,906.40 × 195,596.80
  4. Step 4: Simplify right side
    405,937.60x = 119,100,143,339.52
  5. Step 5: Solve for x
    x = 119,100,143,339.52/405,937.60
  6. Step 6: Final answer
    x = 293,395.20

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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.