Home / 120,421,128.75-191,398,290.75

Finding the Third Proportional to 120,421,128.75 and 191,398,290.75

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Solution

The third proportional to 120,421,128.75 and 191,398,290.75 is: 304,209,951.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421,128.75 : 191,398,290.75 = 191,398,290.75 : x
  2. Step 2: Convert to fraction form
    120,421,128.75/191,398,290.75 = 191,398,290.75/x
  3. Step 3: Cross multiply
    120,421,128.75x = 191,398,290.75 × 191,398,290.75
  4. Step 4: Simplify right side
    120,421,128.75x = 36,633,305,702,021,536
  5. Step 5: Solve for x
    x = 36,633,305,702,021,536/120,421,128.75
  6. Step 6: Final answer
    x = 304,209,951.21

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.