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Finding the Fourth Proportional to 362,371.72, 543,421.50 and 125,657.32

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Solution

The fourth proportional to 362,371.72, 543,421.50 and 125,657.32 is: 188,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,371.72 : 543,421.50 = 125,657.32 : x
  2. Step 2: Convert to fraction form
    362,371.72/543,421.50 = 125,657.32/x
  3. Step 3: Cross multiply
    362,371.72x = 543,421.50 × 125,657.32
  4. Step 4: Simplify right side
    362,371.72x = 68,284,889,320.38
  5. Step 5: Solve for x
    x = 68,284,889,320.38/362,371.72
  6. Step 6: Final answer
    x = 188,438.79

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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.