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Finding the Fourth Proportional to 200,781.53, 277,078.50 and 115,898.60

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Solution

The fourth proportional to 200,781.53, 277,078.50 and 115,898.60 is: 159,940.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,781.53 : 277,078.50 = 115,898.60 : x
  2. Step 2: Convert to fraction form
    200,781.53/277,078.50 = 115,898.60/x
  3. Step 3: Cross multiply
    200,781.53x = 277,078.50 × 115,898.60
  4. Step 4: Simplify right side
    200,781.53x = 32,113,010,240.10
  5. Step 5: Solve for x
    x = 32,113,010,240.10/200,781.53
  6. Step 6: Final answer
    x = 159,940.06

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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.