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Finding the Fourth Proportional to 388,586.35, 583,127.56 and 188,797.81

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Solution

The fourth proportional to 388,586.35, 583,127.56 and 188,797.81 is: 283,317.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,586.35 : 583,127.56 = 188,797.81 : x
  2. Step 2: Convert to fraction form
    388,586.35/583,127.56 = 188,797.81/x
  3. Step 3: Cross multiply
    388,586.35x = 583,127.56 × 188,797.81
  4. Step 4: Simplify right side
    388,586.35x = 110,093,202,891.01
  5. Step 5: Solve for x
    x = 110,093,202,891.01/388,586.35
  6. Step 6: Final answer
    x = 283,317.22

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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.