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Finding the Fourth Proportional to 388,520.06, 582,780.11 and 188,669.16

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Solution

The fourth proportional to 388,520.06, 582,780.11 and 188,669.16 is: 283,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,520.06 : 582,780.11 = 188,669.16 : x
  2. Step 2: Convert to fraction form
    388,520.06/582,780.11 = 188,669.16/x
  3. Step 3: Cross multiply
    388,520.06x = 582,780.11 × 188,669.16
  4. Step 4: Simplify right side
    388,520.06x = 109,952,632,875.06
  5. Step 5: Solve for x
    x = 109,952,632,875.06/388,520.06
  6. Step 6: Final answer
    x = 283,003.75

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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.