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Finding the Fourth Proportional to 202,600.40, 279,605.38 and 111,974.06

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Solution

The fourth proportional to 202,600.40, 279,605.38 and 111,974.06 is: 154,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,600.40 : 279,605.38 = 111,974.06 : x
  2. Step 2: Convert to fraction form
    202,600.40/279,605.38 = 111,974.06/x
  3. Step 3: Cross multiply
    202,600.40x = 279,605.38 × 111,974.06
  4. Step 4: Simplify right side
    202,600.40x = 31,308,548,198.42
  5. Step 5: Solve for x
    x = 31,308,548,198.42/202,600.40
  6. Step 6: Final answer
    x = 154,533.50

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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.