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Finding the Fourth Proportional to 147,238.54, 220,672.51 and 79,767.97

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Solution

The fourth proportional to 147,238.54, 220,672.51 and 79,767.97 is: 119,551.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,238.54 : 220,672.51 = 79,767.97 : x
  2. Step 2: Convert to fraction form
    147,238.54/220,672.51 = 79,767.97/x
  3. Step 3: Cross multiply
    147,238.54x = 220,672.51 × 79,767.97
  4. Step 4: Simplify right side
    147,238.54x = 17,602,598,157.50
  5. Step 5: Solve for x
    x = 17,602,598,157.50/147,238.54
  6. Step 6: Final answer
    x = 119,551.57

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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.