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Finding the Fourth Proportional to 200,535.40, 276,729.78 and 115,647.40

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Solution

The fourth proportional to 200,535.40, 276,729.78 and 115,647.40 is: 159,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,535.40 : 276,729.78 = 115,647.40 : x
  2. Step 2: Convert to fraction form
    200,535.40/276,729.78 = 115,647.40/x
  3. Step 3: Cross multiply
    200,535.40x = 276,729.78 × 115,647.40
  4. Step 4: Simplify right side
    200,535.40x = 32,003,079,559.57
  5. Step 5: Solve for x
    x = 32,003,079,559.57/200,535.40
  6. Step 6: Final answer
    x = 159,588.18

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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.