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Finding the Fourth Proportional to 482,700.98, 724,168.44 and 145,721.48

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Solution

The fourth proportional to 482,700.98, 724,168.44 and 145,721.48 is: 218,617.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,700.98 : 724,168.44 = 145,721.48 : x
  2. Step 2: Convert to fraction form
    482,700.98/724,168.44 = 145,721.48/x
  3. Step 3: Cross multiply
    482,700.98x = 724,168.44 × 145,721.48
  4. Step 4: Simplify right side
    482,700.98x = 105,526,896,846.09
  5. Step 5: Solve for x
    x = 105,526,896,846.09/482,700.98
  6. Step 6: Final answer
    x = 218,617.53

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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.