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Finding the Fourth Proportional to 603,728.57, 905,583.63 and 154,445.65

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Solution

The fourth proportional to 603,728.57, 905,583.63 and 154,445.65 is: 231,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,728.57 : 905,583.63 = 154,445.65 : x
  2. Step 2: Convert to fraction form
    603,728.57/905,583.63 = 154,445.65/x
  3. Step 3: Cross multiply
    603,728.57x = 905,583.63 × 154,445.65
  4. Step 4: Simplify right side
    603,728.57x = 139,863,450,679.92
  5. Step 5: Solve for x
    x = 139,863,450,679.92/603,728.57
  6. Step 6: Final answer
    x = 231,666.11

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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.