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Finding the Fourth Proportional to 72,331.44, 108,493.64 and 19,022.08

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Solution

The fourth proportional to 72,331.44, 108,493.64 and 19,022.08 is: 28,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,331.44 : 108,493.64 = 19,022.08 : x
  2. Step 2: Convert to fraction form
    72,331.44/108,493.64 = 19,022.08/x
  3. Step 3: Cross multiply
    72,331.44x = 108,493.64 × 19,022.08
  4. Step 4: Simplify right side
    72,331.44x = 2,063,774,699.57
  5. Step 5: Solve for x
    x = 2,063,774,699.57/72,331.44
  6. Step 6: Final answer
    x = 28,532.19

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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.