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Finding the Fourth Proportional to 365,361.48, 548,353.26 and 143,901

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Solution

The fourth proportional to 365,361.48, 548,353.26 and 143,901 is: 215,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,361.48 : 548,353.26 = 143,901 : x
  2. Step 2: Convert to fraction form
    365,361.48/548,353.26 = 143,901/x
  3. Step 3: Cross multiply
    365,361.48x = 548,353.26 × 143,901
  4. Step 4: Simplify right side
    365,361.48x = 78,908,582,467.26
  5. Step 5: Solve for x
    x = 78,908,582,467.26/365,361.48
  6. Step 6: Final answer
    x = 215,974.01

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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.