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Finding the Fourth Proportional to 19,995.21, 27,594.54 and 12,040

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Solution

The fourth proportional to 19,995.21, 27,594.54 and 12,040 is: 16,615.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,995.21 : 27,594.54 = 12,040 : x
  2. Step 2: Convert to fraction form
    19,995.21/27,594.54 = 12,040/x
  3. Step 3: Cross multiply
    19,995.21x = 27,594.54 × 12,040
  4. Step 4: Simplify right side
    19,995.21x = 332,238,261.60
  5. Step 5: Solve for x
    x = 332,238,261.60/19,995.21
  6. Step 6: Final answer
    x = 16,615.89

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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.