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Finding the Fourth Proportional to 201,919.44, 278,661 and 111,275.16

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Solution

The fourth proportional to 201,919.44, 278,661 and 111,275.16 is: 153,566.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,919.44 : 278,661 = 111,275.16 : x
  2. Step 2: Convert to fraction form
    201,919.44/278,661 = 111,275.16/x
  3. Step 3: Cross multiply
    201,919.44x = 278,661 × 111,275.16
  4. Step 4: Simplify right side
    201,919.44x = 31,008,047,360.76
  5. Step 5: Solve for x
    x = 31,008,047,360.76/201,919.44
  6. Step 6: Final answer
    x = 153,566.43

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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.