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Finding the Fourth Proportional to 55,991.40, 84,002.40 and 16,548.48

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Solution

The fourth proportional to 55,991.40, 84,002.40 and 16,548.48 is: 24,827.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,991.40 : 84,002.40 = 16,548.48 : x
  2. Step 2: Convert to fraction form
    55,991.40/84,002.40 = 16,548.48/x
  3. Step 3: Cross multiply
    55,991.40x = 84,002.40 × 16,548.48
  4. Step 4: Simplify right side
    55,991.40x = 1,390,112,036.35
  5. Step 5: Solve for x
    x = 1,390,112,036.35/55,991.40
  6. Step 6: Final answer
    x = 24,827.24

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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.