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Finding the Fourth Proportional to 397,518.90, 596,281.91 and 113,209.20

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Solution

The fourth proportional to 397,518.90, 596,281.91 and 113,209.20 is: 169,814.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,518.90 : 596,281.91 = 113,209.20 : x
  2. Step 2: Convert to fraction form
    397,518.90/596,281.91 = 113,209.20/x
  3. Step 3: Cross multiply
    397,518.90x = 596,281.91 × 113,209.20
  4. Step 4: Simplify right side
    397,518.90x = 67,504,597,439.53
  5. Step 5: Solve for x
    x = 67,504,597,439.53/397,518.90
  6. Step 6: Final answer
    x = 169,814.81

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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.