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Finding the Fourth Proportional to 70,107.94, 96,751.09 and 39,897.61

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Solution

The fourth proportional to 70,107.94, 96,751.09 and 39,897.61 is: 55,059.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,107.94 : 96,751.09 = 39,897.61 : x
  2. Step 2: Convert to fraction form
    70,107.94/96,751.09 = 39,897.61/x
  3. Step 3: Cross multiply
    70,107.94x = 96,751.09 × 39,897.61
  4. Step 4: Simplify right side
    70,107.94x = 3,860,137,063.89
  5. Step 5: Solve for x
    x = 3,860,137,063.89/70,107.94
  6. Step 6: Final answer
    x = 55,059.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.