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Finding the Fourth Proportional to 482,707.80, 724,061.70 and 127,757.70

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Solution

The fourth proportional to 482,707.80, 724,061.70 and 127,757.70 is: 191,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,707.80 : 724,061.70 = 127,757.70 : x
  2. Step 2: Convert to fraction form
    482,707.80/724,061.70 = 127,757.70/x
  3. Step 3: Cross multiply
    482,707.80x = 724,061.70 × 127,757.70
  4. Step 4: Simplify right side
    482,707.80x = 92,504,457,450.09
  5. Step 5: Solve for x
    x = 92,504,457,450.09/482,707.80
  6. Step 6: Final answer
    x = 191,636.55

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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.