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Finding the Fourth Proportional to 57,059.33, 78,735.84 and 31,561.64

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Solution

The fourth proportional to 57,059.33, 78,735.84 and 31,561.64 is: 43,551.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,059.33 : 78,735.84 = 31,561.64 : x
  2. Step 2: Convert to fraction form
    57,059.33/78,735.84 = 31,561.64/x
  3. Step 3: Cross multiply
    57,059.33x = 78,735.84 × 31,561.64
  4. Step 4: Simplify right side
    57,059.33x = 2,485,032,237.18
  5. Step 5: Solve for x
    x = 2,485,032,237.18/57,059.33
  6. Step 6: Final answer
    x = 43,551.72

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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.