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Finding the Fourth Proportional to 23,980.56, 35,973.90 and 12,872.01

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Solution

The fourth proportional to 23,980.56, 35,973.90 and 12,872.01 is: 19,309.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,980.56 : 35,973.90 = 12,872.01 : x
  2. Step 2: Convert to fraction form
    23,980.56/35,973.90 = 12,872.01/x
  3. Step 3: Cross multiply
    23,980.56x = 35,973.90 × 12,872.01
  4. Step 4: Simplify right side
    23,980.56x = 463,056,400.54
  5. Step 5: Solve for x
    x = 463,056,400.54/23,980.56
  6. Step 6: Final answer
    x = 19,309.66

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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.