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Finding the Fourth Proportional to 216,818.54, 325,217.78 and 56,890.52

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Solution

The fourth proportional to 216,818.54, 325,217.78 and 56,890.52 is: 85,333.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,818.54 : 325,217.78 = 56,890.52 : x
  2. Step 2: Convert to fraction form
    216,818.54/325,217.78 = 56,890.52/x
  3. Step 3: Cross multiply
    216,818.54x = 325,217.78 × 56,890.52
  4. Step 4: Simplify right side
    216,818.54x = 18,501,806,706.90
  5. Step 5: Solve for x
    x = 18,501,806,706.90/216,818.54
  6. Step 6: Final answer
    x = 85,333.14

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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.