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Finding the Fourth Proportional to 216,816.48, 325,143.90 and 74,622.06

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Solution

The fourth proportional to 216,816.48, 325,143.90 and 74,622.06 is: 111,905.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,816.48 : 325,143.90 = 74,622.06 : x
  2. Step 2: Convert to fraction form
    216,816.48/325,143.90 = 74,622.06/x
  3. Step 3: Cross multiply
    216,816.48x = 325,143.90 × 74,622.06
  4. Step 4: Simplify right side
    216,816.48x = 24,262,907,614.43
  5. Step 5: Solve for x
    x = 24,262,907,614.43/216,816.48
  6. Step 6: Final answer
    x = 111,905.27

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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.