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Finding the Fourth Proportional to 427,122.88, 589,441.88 and 236,148.60

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Solution

The fourth proportional to 427,122.88, 589,441.88 and 236,148.60 is: 325,891.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,122.88 : 589,441.88 = 236,148.60 : x
  2. Step 2: Convert to fraction form
    427,122.88/589,441.88 = 236,148.60/x
  3. Step 3: Cross multiply
    427,122.88x = 589,441.88 × 236,148.60
  4. Step 4: Simplify right side
    427,122.88x = 139,195,874,743.37
  5. Step 5: Solve for x
    x = 139,195,874,743.37/427,122.88
  6. Step 6: Final answer
    x = 325,891.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.