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Finding the Fourth Proportional to 8,908.36, 12,293.40 and 5,764.48

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Solution

The fourth proportional to 8,908.36, 12,293.40 and 5,764.48 is: 7,954.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.36 : 12,293.40 = 5,764.48 : x
  2. Step 2: Convert to fraction form
    8,908.36/12,293.40 = 5,764.48/x
  3. Step 3: Cross multiply
    8,908.36x = 12,293.40 × 5,764.48
  4. Step 4: Simplify right side
    8,908.36x = 70,865,058.43
  5. Step 5: Solve for x
    x = 70,865,058.43/8,908.36
  6. Step 6: Final answer
    x = 7,954.89

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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.