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Finding the Fourth Proportional to 362,603.54, 543,905.31 and 137,912.07

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Solution

The fourth proportional to 362,603.54, 543,905.31 and 137,912.07 is: 206,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,603.54 : 543,905.31 = 137,912.07 : x
  2. Step 2: Convert to fraction form
    362,603.54/543,905.31 = 137,912.07/x
  3. Step 3: Cross multiply
    362,603.54x = 543,905.31 × 137,912.07
  4. Step 4: Simplify right side
    362,603.54x = 75,011,105,519.81
  5. Step 5: Solve for x
    x = 75,011,105,519.81/362,603.54
  6. Step 6: Final answer
    x = 206,868.10

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Similar ratio
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1.5x scale

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.