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Finding the Fourth Proportional to 202,618.56, 279,619.20 and 111,980.40

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Solution

The fourth proportional to 202,618.56, 279,619.20 and 111,980.40 is: 154,536.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,618.56 : 279,619.20 = 111,980.40 : x
  2. Step 2: Convert to fraction form
    202,618.56/279,619.20 = 111,980.40/x
  3. Step 3: Cross multiply
    202,618.56x = 279,619.20 × 111,980.40
  4. Step 4: Simplify right side
    202,618.56x = 31,311,869,863.68
  5. Step 5: Solve for x
    x = 31,311,869,863.68/202,618.56
  6. Step 6: Final answer
    x = 154,536.04

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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.