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Finding the Fourth Proportional to 216,892.72, 325,365.32 and 76,622.64

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Solution

The fourth proportional to 216,892.72, 325,365.32 and 76,622.64 is: 114,943.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,892.72 : 325,365.32 = 76,622.64 : x
  2. Step 2: Convert to fraction form
    216,892.72/325,365.32 = 76,622.64/x
  3. Step 3: Cross multiply
    216,892.72x = 325,365.32 × 76,622.64
  4. Step 4: Simplify right side
    216,892.72x = 24,930,349,782.84
  5. Step 5: Solve for x
    x = 24,930,349,782.84/216,892.72
  6. Step 6: Final answer
    x = 114,943.23

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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.