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Finding the Fourth Proportional to 85,011.92, 127,532.46 and 25,853.48

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Solution

The fourth proportional to 85,011.92, 127,532.46 and 25,853.48 is: 38,784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,011.92 : 127,532.46 = 25,853.48 : x
  2. Step 2: Convert to fraction form
    85,011.92/127,532.46 = 25,853.48/x
  3. Step 3: Cross multiply
    85,011.92x = 127,532.46 × 25,853.48
  4. Step 4: Simplify right side
    85,011.92x = 3,297,157,903.96
  5. Step 5: Solve for x
    x = 3,297,157,903.96/85,011.92
  6. Step 6: Final answer
    x = 38,784.65

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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.