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Finding the Fourth Proportional to 49,897.44, 74,844.72 and 12,961.44

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Solution

The fourth proportional to 49,897.44, 74,844.72 and 12,961.44 is: 19,441.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,897.44 : 74,844.72 = 12,961.44 : x
  2. Step 2: Convert to fraction form
    49,897.44/74,844.72 = 12,961.44/x
  3. Step 3: Cross multiply
    49,897.44x = 74,844.72 × 12,961.44
  4. Step 4: Simplify right side
    49,897.44x = 970,095,347.60
  5. Step 5: Solve for x
    x = 970,095,347.60/49,897.44
  6. Step 6: Final answer
    x = 19,441.79

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1.5x scale

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.