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Finding the Fourth Proportional to 394,486.40, 591,806.40 and 169,846.40

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Solution

The fourth proportional to 394,486.40, 591,806.40 and 169,846.40 is: 254,802.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,486.40 : 591,806.40 = 169,846.40 : x
  2. Step 2: Convert to fraction form
    394,486.40/591,806.40 = 169,846.40/x
  3. Step 3: Cross multiply
    394,486.40x = 591,806.40 × 169,846.40
  4. Step 4: Simplify right side
    394,486.40x = 100,516,186,536.96
  5. Step 5: Solve for x
    x = 100,516,186,536.96/394,486.40
  6. Step 6: Final answer
    x = 254,802.67

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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.