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Finding the Fourth Proportional to 215,157, 296,916.66 and 125,733

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Solution

The fourth proportional to 215,157, 296,916.66 and 125,733 is: 173,511.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,157 : 296,916.66 = 125,733 : x
  2. Step 2: Convert to fraction form
    215,157/296,916.66 = 125,733/x
  3. Step 3: Cross multiply
    215,157x = 296,916.66 × 125,733
  4. Step 4: Simplify right side
    215,157x = 37,332,222,411.78
  5. Step 5: Solve for x
    x = 37,332,222,411.78/215,157
  6. Step 6: Final answer
    x = 173,511.54

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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.