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Finding the Fourth Proportional to 483,219.87, 724,773.50 and 128,261.46

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Solution

The fourth proportional to 483,219.87, 724,773.50 and 128,261.46 is: 192,377.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,219.87 : 724,773.50 = 128,261.46 : x
  2. Step 2: Convert to fraction form
    483,219.87/724,773.50 = 128,261.46/x
  3. Step 3: Cross multiply
    483,219.87x = 724,773.50 × 128,261.46
  4. Step 4: Simplify right side
    483,219.87x = 92,960,507,279.31
  5. Step 5: Solve for x
    x = 92,960,507,279.31/483,219.87
  6. Step 6: Final answer
    x = 192,377.24

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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.