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Finding the Fourth Proportional to 104,485.40, 156,795.30 and 57,771.80

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Solution

The fourth proportional to 104,485.40, 156,795.30 and 57,771.80 is: 86,694.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,485.40 : 156,795.30 = 57,771.80 : x
  2. Step 2: Convert to fraction form
    104,485.40/156,795.30 = 57,771.80/x
  3. Step 3: Cross multiply
    104,485.40x = 156,795.30 × 57,771.80
  4. Step 4: Simplify right side
    104,485.40x = 9,058,346,712.54
  5. Step 5: Solve for x
    x = 9,058,346,712.54/104,485.40
  6. Step 6: Final answer
    x = 86,694.86

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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.