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Finding the Fourth Proportional to 413,722.70, 620,142.60 and 235,846.70

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Solution

The fourth proportional to 413,722.70, 620,142.60 and 235,846.70 is: 353,518.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,722.70 : 620,142.60 = 235,846.70 : x
  2. Step 2: Convert to fraction form
    413,722.70/620,142.60 = 235,846.70/x
  3. Step 3: Cross multiply
    413,722.70x = 620,142.60 × 235,846.70
  4. Step 4: Simplify right side
    413,722.70x = 146,258,585,739.42
  5. Step 5: Solve for x
    x = 146,258,585,739.42/413,722.70
  6. Step 6: Final answer
    x = 353,518.40

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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.