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Finding the Fourth Proportional to 231,495.53, 348,978.39 and 216,064.37

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Solution

The fourth proportional to 231,495.53, 348,978.39 and 216,064.37 is: 325,715.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,495.53 : 348,978.39 = 216,064.37 : x
  2. Step 2: Convert to fraction form
    231,495.53/348,978.39 = 216,064.37/x
  3. Step 3: Cross multiply
    231,495.53x = 348,978.39 × 216,064.37
  4. Step 4: Simplify right side
    231,495.53x = 75,401,794,234.07
  5. Step 5: Solve for x
    x = 75,401,794,234.07/231,495.53
  6. Step 6: Final answer
    x = 325,715.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.