Home / 129,512,086.60-194,243,246.70-38,638,640.20

Finding the Fourth Proportional to 129,512,086.60, 194,243,246.70 and 38,638,640.20

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Solution

The fourth proportional to 129,512,086.60, 194,243,246.70 and 38,638,640.20 is: 57,950,536.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,512,086.60 : 194,243,246.70 = 38,638,640.20 : x
  2. Step 2: Convert to fraction form
    129,512,086.60/194,243,246.70 = 38,638,640.20/x
  3. Step 3: Cross multiply
    129,512,086.60x = 194,243,246.70 × 38,638,640.20
  4. Step 4: Simplify right side
    129,512,086.60x = 7,505,294,920,521,137
  5. Step 5: Solve for x
    x = 7,505,294,920,521,137/129,512,086.60
  6. Step 6: Final answer
    x = 57,950,536.65

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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.