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Finding the Fourth Proportional to 482,687.45, 724,065.80 and 127,697.25

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Solution

The fourth proportional to 482,687.45, 724,065.80 and 127,697.25 is: 191,555.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,687.45 : 724,065.80 = 127,697.25 : x
  2. Step 2: Convert to fraction form
    482,687.45/724,065.80 = 127,697.25/x
  3. Step 3: Cross multiply
    482,687.45x = 724,065.80 × 127,697.25
  4. Step 4: Simplify right side
    482,687.45x = 92,461,210,840.56
  5. Step 5: Solve for x
    x = 92,461,210,840.56/482,687.45
  6. Step 6: Final answer
    x = 191,555.04

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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.