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Finding the Fourth Proportional to 85,894.89, 128,851.17 and 29,734.89

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Solution

The fourth proportional to 85,894.89, 128,851.17 and 29,734.89 is: 44,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,894.89 : 128,851.17 = 29,734.89 : x
  2. Step 2: Convert to fraction form
    85,894.89/128,851.17 = 29,734.89/x
  3. Step 3: Cross multiply
    85,894.89x = 128,851.17 × 29,734.89
  4. Step 4: Simplify right side
    85,894.89x = 3,831,375,366.32
  5. Step 5: Solve for x
    x = 3,831,375,366.32/85,894.89
  6. Step 6: Final answer
    x = 44,605.39

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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.