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Finding the Fourth Proportional to 336,859.52, 505,219.68 and 126,492.80

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Solution

The fourth proportional to 336,859.52, 505,219.68 and 126,492.80 is: 189,713.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,859.52 : 505,219.68 = 126,492.80 : x
  2. Step 2: Convert to fraction form
    336,859.52/505,219.68 = 126,492.80/x
  3. Step 3: Cross multiply
    336,859.52x = 505,219.68 × 126,492.80
  4. Step 4: Simplify right side
    336,859.52x = 63,906,651,938.30
  5. Step 5: Solve for x
    x = 63,906,651,938.30/336,859.52
  6. Step 6: Final answer
    x = 189,713.06

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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.