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Finding the Fourth Proportional to 202,817.20, 304,225.80 and 171,713.20

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Solution

The fourth proportional to 202,817.20, 304,225.80 and 171,713.20 is: 257,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,817.20 : 304,225.80 = 171,713.20 : x
  2. Step 2: Convert to fraction form
    202,817.20/304,225.80 = 171,713.20/x
  3. Step 3: Cross multiply
    202,817.20x = 304,225.80 × 171,713.20
  4. Step 4: Simplify right side
    202,817.20x = 52,239,585,640.56
  5. Step 5: Solve for x
    x = 52,239,585,640.56/202,817.20
  6. Step 6: Final answer
    x = 257,569.80

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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.