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Finding the Fourth Proportional to 202,811.60, 304,217.40 and 136,456.40

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Solution

The fourth proportional to 202,811.60, 304,217.40 and 136,456.40 is: 204,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,811.60 : 304,217.40 = 136,456.40 : x
  2. Step 2: Convert to fraction form
    202,811.60/304,217.40 = 136,456.40/x
  3. Step 3: Cross multiply
    202,811.60x = 304,217.40 × 136,456.40
  4. Step 4: Simplify right side
    202,811.60x = 41,512,411,221.36
  5. Step 5: Solve for x
    x = 41,512,411,221.36/202,811.60
  6. Step 6: Final answer
    x = 204,684.60

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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.