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Finding the Fourth Proportional to 325,012.56, 487,579.86 and 147,532.02

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Solution

The fourth proportional to 325,012.56, 487,579.86 and 147,532.02 is: 221,325.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,012.56 : 487,579.86 = 147,532.02 : x
  2. Step 2: Convert to fraction form
    325,012.56/487,579.86 = 147,532.02/x
  3. Step 3: Cross multiply
    325,012.56x = 487,579.86 × 147,532.02
  4. Step 4: Simplify right side
    325,012.56x = 71,933,641,657.12
  5. Step 5: Solve for x
    x = 71,933,641,657.12/325,012.56
  6. Step 6: Final answer
    x = 221,325.73

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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.