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Finding the Fourth Proportional to 529,200.40, 791,856.60 and 389,232.40

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Solution

The fourth proportional to 529,200.40, 791,856.60 and 389,232.40 is: 582,418.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,200.40 : 791,856.60 = 389,232.40 : x
  2. Step 2: Convert to fraction form
    529,200.40/791,856.60 = 389,232.40/x
  3. Step 3: Cross multiply
    529,200.40x = 791,856.60 × 389,232.40
  4. Step 4: Simplify right side
    529,200.40x = 308,216,244,873.84
  5. Step 5: Solve for x
    x = 308,216,244,873.84/529,200.40
  6. Step 6: Final answer
    x = 582,418.77

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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.