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Finding the Fourth Proportional to 436,790.34, 655,343.15 and 152,522.78

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Solution

The fourth proportional to 436,790.34, 655,343.15 and 152,522.78 is: 228,839.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,790.34 : 655,343.15 = 152,522.78 : x
  2. Step 2: Convert to fraction form
    436,790.34/655,343.15 = 152,522.78/x
  3. Step 3: Cross multiply
    436,790.34x = 655,343.15 × 152,522.78
  4. Step 4: Simplify right side
    436,790.34x = 99,954,755,052.63
  5. Step 5: Solve for x
    x = 99,954,755,052.63/436,790.34
  6. Step 6: Final answer
    x = 228,839.21

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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.