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Finding the Fourth Proportional to 325,021.56, 487,593.36 and 147,541.02

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Solution

The fourth proportional to 325,021.56, 487,593.36 and 147,541.02 is: 221,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,021.56 : 487,593.36 = 147,541.02 : x
  2. Step 2: Convert to fraction form
    325,021.56/487,593.36 = 147,541.02/x
  3. Step 3: Cross multiply
    325,021.56x = 487,593.36 × 147,541.02
  4. Step 4: Simplify right side
    325,021.56x = 71,940,021,679.63
  5. Step 5: Solve for x
    x = 71,940,021,679.63/325,021.56
  6. Step 6: Final answer
    x = 221,339.23

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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.