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Finding the Fourth Proportional to 351,874.90, 527,812.40 and 85,635.41

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Solution

The fourth proportional to 351,874.90, 527,812.40 and 85,635.41 is: 128,453.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,874.90 : 527,812.40 = 85,635.41 : x
  2. Step 2: Convert to fraction form
    351,874.90/527,812.40 = 85,635.41/x
  3. Step 3: Cross multiply
    351,874.90x = 527,812.40 × 85,635.41
  4. Step 4: Simplify right side
    351,874.90x = 45,199,431,821.06
  5. Step 5: Solve for x
    x = 45,199,431,821.06/351,874.90
  6. Step 6: Final answer
    x = 128,453.13

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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.