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Finding the Fourth Proportional to 444,388.78, 666,683.18 and 140,801.20

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Solution

The fourth proportional to 444,388.78, 666,683.18 and 140,801.20 is: 211,233.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,388.78 : 666,683.18 = 140,801.20 : x
  2. Step 2: Convert to fraction form
    444,388.78/666,683.18 = 140,801.20/x
  3. Step 3: Cross multiply
    444,388.78x = 666,683.18 × 140,801.20
  4. Step 4: Simplify right side
    444,388.78x = 93,869,791,763.82
  5. Step 5: Solve for x
    x = 93,869,791,763.82/444,388.78
  6. Step 6: Final answer
    x = 211,233.49

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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.