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Finding the Fourth Proportional to 57,038.94, 85,558.42 and 15,485.94

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Solution

The fourth proportional to 57,038.94, 85,558.42 and 15,485.94 is: 23,228.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,038.94 : 85,558.42 = 15,485.94 : x
  2. Step 2: Convert to fraction form
    57,038.94/85,558.42 = 15,485.94/x
  3. Step 3: Cross multiply
    57,038.94x = 85,558.42 × 15,485.94
  4. Step 4: Simplify right side
    57,038.94x = 1,324,952,558.61
  5. Step 5: Solve for x
    x = 1,324,952,558.61/57,038.94
  6. Step 6: Final answer
    x = 23,228.91

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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.