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Finding the Fourth Proportional to 216,940.32, 325,285.89 and 115,613.63

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Solution

The fourth proportional to 216,940.32, 325,285.89 and 115,613.63 is: 173,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,940.32 : 325,285.89 = 115,613.63 : x
  2. Step 2: Convert to fraction form
    216,940.32/325,285.89 = 115,613.63/x
  3. Step 3: Cross multiply
    216,940.32x = 325,285.89 × 115,613.63
  4. Step 4: Simplify right side
    216,940.32x = 37,607,480,904.25
  5. Step 5: Solve for x
    x = 37,607,480,904.25/216,940.32
  6. Step 6: Final answer
    x = 173,354.04

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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.