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Finding the Fourth Proportional to 42,609.36, 63,913.76 and 13,027.08

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Solution

The fourth proportional to 42,609.36, 63,913.76 and 13,027.08 is: 19,540.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,609.36 : 63,913.76 = 13,027.08 : x
  2. Step 2: Convert to fraction form
    42,609.36/63,913.76 = 13,027.08/x
  3. Step 3: Cross multiply
    42,609.36x = 63,913.76 × 13,027.08
  4. Step 4: Simplify right side
    42,609.36x = 832,609,664.62
  5. Step 5: Solve for x
    x = 832,609,664.62/42,609.36
  6. Step 6: Final answer
    x = 19,540.53

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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.