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Finding the Fourth Proportional to 492,728.74, 739,086.63 and 118,748.50

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Solution

The fourth proportional to 492,728.74, 739,086.63 and 118,748.50 is: 178,121.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,728.74 : 739,086.63 = 118,748.50 : x
  2. Step 2: Convert to fraction form
    492,728.74/739,086.63 = 118,748.50/x
  3. Step 3: Cross multiply
    492,728.74x = 739,086.63 × 118,748.50
  4. Step 4: Simplify right side
    492,728.74x = 87,765,428,682.56
  5. Step 5: Solve for x
    x = 87,765,428,682.56/492,728.74
  6. Step 6: Final answer
    x = 178,121.19

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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.