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Finding the Fourth Proportional to 58,383.12, 80,504.64 and 39,487.44

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Solution

The fourth proportional to 58,383.12, 80,504.64 and 39,487.44 is: 54,449.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,383.12 : 80,504.64 = 39,487.44 : x
  2. Step 2: Convert to fraction form
    58,383.12/80,504.64 = 39,487.44/x
  3. Step 3: Cross multiply
    58,383.12x = 80,504.64 × 39,487.44
  4. Step 4: Simplify right side
    58,383.12x = 3,178,922,141.72
  5. Step 5: Solve for x
    x = 3,178,922,141.72/58,383.12
  6. Step 6: Final answer
    x = 54,449.34

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1.5x scale

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.