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Finding the Fourth Proportional to 428,591.45, 591,470.58 and 237,593.45

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Solution

The fourth proportional to 428,591.45, 591,470.58 and 237,593.45 is: 327,886.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,591.45 : 591,470.58 = 237,593.45 : x
  2. Step 2: Convert to fraction form
    428,591.45/591,470.58 = 237,593.45/x
  3. Step 3: Cross multiply
    428,591.45x = 591,470.58 × 237,593.45
  4. Step 4: Simplify right side
    428,591.45x = 140,529,535,675.70
  5. Step 5: Solve for x
    x = 140,529,535,675.70/428,591.45
  6. Step 6: Final answer
    x = 327,886.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.