Home / 198,517,128.75-300,328,886.25

Finding the Third Proportional to 198,517,128.75 and 300,328,886.25

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Solution

The third proportional to 198,517,128.75 and 300,328,886.25 is: 454,355,956.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,517,128.75 : 300,328,886.25 = 300,328,886.25 : x
  2. Step 2: Convert to fraction form
    198,517,128.75/300,328,886.25 = 300,328,886.25/x
  3. Step 3: Cross multiply
    198,517,128.75x = 300,328,886.25 × 300,328,886.25
  4. Step 4: Simplify right side
    198,517,128.75x = 90,197,439,916,165,440
  5. Step 5: Solve for x
    x = 90,197,439,916,165,440/198,517,128.75
  6. Step 6: Final answer
    x = 454,355,956.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.