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Finding the Fourth Proportional to 355,036.82, 489,954.71 and 193,896.60

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Solution

The fourth proportional to 355,036.82, 489,954.71 and 193,896.60 is: 267,579.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,036.82 : 489,954.71 = 193,896.60 : x
  2. Step 2: Convert to fraction form
    355,036.82/489,954.71 = 193,896.60/x
  3. Step 3: Cross multiply
    355,036.82x = 489,954.71 × 193,896.60
  4. Step 4: Simplify right side
    355,036.82x = 95,000,551,453.50
  5. Step 5: Solve for x
    x = 95,000,551,453.50/355,036.82
  6. Step 6: Final answer
    x = 267,579.44

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1.5x scale

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.