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Finding the Fourth Proportional to 18,205.94, 27,308.90 and 5,058.31

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Solution

The fourth proportional to 18,205.94, 27,308.90 and 5,058.31 is: 7,587.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.94 : 27,308.90 = 5,058.31 : x
  2. Step 2: Convert to fraction form
    18,205.94/27,308.90 = 5,058.31/x
  3. Step 3: Cross multiply
    18,205.94x = 27,308.90 × 5,058.31
  4. Step 4: Simplify right side
    18,205.94x = 138,136,739.09
  5. Step 5: Solve for x
    x = 138,136,739.09/18,205.94
  6. Step 6: Final answer
    x = 7,587.45

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Similar ratio
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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.