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Finding the Fourth Proportional to 482,806.80, 724,206.60 and 145,846.80

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Solution

The fourth proportional to 482,806.80, 724,206.60 and 145,846.80 is: 218,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,806.80 : 724,206.60 = 145,846.80 : x
  2. Step 2: Convert to fraction form
    482,806.80/724,206.60 = 145,846.80/x
  3. Step 3: Cross multiply
    482,806.80x = 724,206.60 × 145,846.80
  4. Step 4: Simplify right side
    482,806.80x = 105,623,215,148.88
  5. Step 5: Solve for x
    x = 105,623,215,148.88/482,806.80
  6. Step 6: Final answer
    x = 218,769.11

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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.