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Finding the Fourth Proportional to 57,076.79, 85,619.27 and 17,628.77

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Solution

The fourth proportional to 57,076.79, 85,619.27 and 17,628.77 is: 26,444.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,076.79 : 85,619.27 = 17,628.77 : x
  2. Step 2: Convert to fraction form
    57,076.79/85,619.27 = 17,628.77/x
  3. Step 3: Cross multiply
    57,076.79x = 85,619.27 × 17,628.77
  4. Step 4: Simplify right side
    57,076.79x = 1,509,362,676.52
  5. Step 5: Solve for x
    x = 1,509,362,676.52/57,076.79
  6. Step 6: Final answer
    x = 26,444.42

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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.