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Finding the Fourth Proportional to 156,578.54, 216,134.42 and 92,916.33

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Solution

The fourth proportional to 156,578.54, 216,134.42 and 92,916.33 is: 128,257.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,578.54 : 216,134.42 = 92,916.33 : x
  2. Step 2: Convert to fraction form
    156,578.54/216,134.42 = 92,916.33/x
  3. Step 3: Cross multiply
    156,578.54x = 216,134.42 × 92,916.33
  4. Step 4: Simplify right side
    156,578.54x = 20,082,416,628.50
  5. Step 5: Solve for x
    x = 20,082,416,628.50/156,578.54
  6. Step 6: Final answer
    x = 128,257.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.