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Finding the Fourth Proportional to 216,913.23, 325,381.37 and 67,256.91

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Solution

The fourth proportional to 216,913.23, 325,381.37 and 67,256.91 is: 100,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,913.23 : 325,381.37 = 67,256.91 : x
  2. Step 2: Convert to fraction form
    216,913.23/325,381.37 = 67,256.91/x
  3. Step 3: Cross multiply
    216,913.23x = 325,381.37 × 67,256.91
  4. Step 4: Simplify right side
    216,913.23x = 21,884,145,181.48
  5. Step 5: Solve for x
    x = 21,884,145,181.48/216,913.23
  6. Step 6: Final answer
    x = 100,888.94

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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.