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Finding the Fourth Proportional to 55,680.72, 76,828.48 and 33,015.48

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Solution

The fourth proportional to 55,680.72, 76,828.48 and 33,015.48 is: 45,554.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,680.72 : 76,828.48 = 33,015.48 : x
  2. Step 2: Convert to fraction form
    55,680.72/76,828.48 = 33,015.48/x
  3. Step 3: Cross multiply
    55,680.72x = 76,828.48 × 33,015.48
  4. Step 4: Simplify right side
    55,680.72x = 2,536,529,144.87
  5. Step 5: Solve for x
    x = 2,536,529,144.87/55,680.72
  6. Step 6: Final answer
    x = 45,554.89

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1.5x scale

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.