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Finding the Fourth Proportional to 145,052.64, 217,589.50 and 60,728

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Solution

The fourth proportional to 145,052.64, 217,589.50 and 60,728 is: 91,096.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,052.64 : 217,589.50 = 60,728 : x
  2. Step 2: Convert to fraction form
    145,052.64/217,589.50 = 60,728/x
  3. Step 3: Cross multiply
    145,052.64x = 217,589.50 × 60,728
  4. Step 4: Simplify right side
    145,052.64x = 13,213,775,156
  5. Step 5: Solve for x
    x = 13,213,775,156/145,052.64
  6. Step 6: Final answer
    x = 91,096.41

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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.