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Finding the Fourth Proportional to 87,058.66, 130,587.99 and 57,469.58

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Solution

The fourth proportional to 87,058.66, 130,587.99 and 57,469.58 is: 86,204.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,058.66 : 130,587.99 = 57,469.58 : x
  2. Step 2: Convert to fraction form
    87,058.66/130,587.99 = 57,469.58/x
  3. Step 3: Cross multiply
    87,058.66x = 130,587.99 × 57,469.58
  4. Step 4: Simplify right side
    87,058.66x = 7,504,836,475.18
  5. Step 5: Solve for x
    x = 7,504,836,475.18/87,058.66
  6. Step 6: Final answer
    x = 86,204.36

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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.