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Finding the Fourth Proportional to 107,725.80, 161,596.80 and 28,838.28

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Solution

The fourth proportional to 107,725.80, 161,596.80 and 28,838.28 is: 43,259.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,725.80 : 161,596.80 = 28,838.28 : x
  2. Step 2: Convert to fraction form
    107,725.80/161,596.80 = 28,838.28/x
  3. Step 3: Cross multiply
    107,725.80x = 161,596.80 × 28,838.28
  4. Step 4: Simplify right side
    107,725.80x = 4,660,173,765.50
  5. Step 5: Solve for x
    x = 4,660,173,765.50/107,725.80
  6. Step 6: Final answer
    x = 43,259.59

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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.