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Finding the Fourth Proportional to 362,905.45, 543,866.10 and 242,620.45

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Solution

The fourth proportional to 362,905.45, 543,866.10 and 242,620.45 is: 363,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,905.45 : 543,866.10 = 242,620.45 : x
  2. Step 2: Convert to fraction form
    362,905.45/543,866.10 = 242,620.45/x
  3. Step 3: Cross multiply
    362,905.45x = 543,866.10 × 242,620.45
  4. Step 4: Simplify right side
    362,905.45x = 131,953,037,921.75
  5. Step 5: Solve for x
    x = 131,953,037,921.75/362,905.45
  6. Step 6: Final answer
    x = 363,601.70

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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.