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Finding the Fourth Proportional to 33,316.44, 45,978.06 and 19,169.28

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Solution

The fourth proportional to 33,316.44, 45,978.06 and 19,169.28 is: 26,454.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,316.44 : 45,978.06 = 19,169.28 : x
  2. Step 2: Convert to fraction form
    33,316.44/45,978.06 = 19,169.28/x
  3. Step 3: Cross multiply
    33,316.44x = 45,978.06 × 19,169.28
  4. Step 4: Simplify right side
    33,316.44x = 881,366,306.00
  5. Step 5: Solve for x
    x = 881,366,306.00/33,316.44
  6. Step 6: Final answer
    x = 26,454.40

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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.