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Finding the Fourth Proportional to 57,908.04, 86,748.94 and 39,893.09

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Solution

The fourth proportional to 57,908.04, 86,748.94 and 39,893.09 is: 59,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,908.04 : 86,748.94 = 39,893.09 : x
  2. Step 2: Convert to fraction form
    57,908.04/86,748.94 = 39,893.09/x
  3. Step 3: Cross multiply
    57,908.04x = 86,748.94 × 39,893.09
  4. Step 4: Simplify right side
    57,908.04x = 3,460,683,270.82
  5. Step 5: Solve for x
    x = 3,460,683,270.82/57,908.04
  6. Step 6: Final answer
    x = 59,761.71

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1.5x scale

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.