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Finding the Fourth Proportional to 22,661.56, 33,931.86 and 13,293.88

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Solution

The fourth proportional to 22,661.56, 33,931.86 and 13,293.88 is: 19,905.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,661.56 : 33,931.86 = 13,293.88 : x
  2. Step 2: Convert to fraction form
    22,661.56/33,931.86 = 13,293.88/x
  3. Step 3: Cross multiply
    22,661.56x = 33,931.86 × 13,293.88
  4. Step 4: Simplify right side
    22,661.56x = 451,086,075.02
  5. Step 5: Solve for x
    x = 451,086,075.02/22,661.56
  6. Step 6: Final answer
    x = 19,905.34

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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.