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Finding the Fourth Proportional to 57,798.80, 86,640.60 and 26,579.60

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Solution

The fourth proportional to 57,798.80, 86,640.60 and 26,579.60 is: 39,842.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,798.80 : 86,640.60 = 26,579.60 : x
  2. Step 2: Convert to fraction form
    57,798.80/86,640.60 = 26,579.60/x
  3. Step 3: Cross multiply
    57,798.80x = 86,640.60 × 26,579.60
  4. Step 4: Simplify right side
    57,798.80x = 2,302,872,491.76
  5. Step 5: Solve for x
    x = 2,302,872,491.76/57,798.80
  6. Step 6: Final answer
    x = 39,842.91

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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.