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Finding the Fourth Proportional to 104,485.55, 144,188.80 and 56,739.24

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Solution

The fourth proportional to 104,485.55, 144,188.80 and 56,739.24 is: 78,299.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,485.55 : 144,188.80 = 56,739.24 : x
  2. Step 2: Convert to fraction form
    104,485.55/144,188.80 = 56,739.24/x
  3. Step 3: Cross multiply
    104,485.55x = 144,188.80 × 56,739.24
  4. Step 4: Simplify right side
    104,485.55x = 8,181,162,786.66
  5. Step 5: Solve for x
    x = 8,181,162,786.66/104,485.55
  6. Step 6: Final answer
    x = 78,299.46

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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.