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Finding the Fourth Proportional to 8,725.84, 13,092.60 and 6,388.08

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Solution

The fourth proportional to 8,725.84, 13,092.60 and 6,388.08 is: 9,584.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.84 : 13,092.60 = 6,388.08 : x
  2. Step 2: Convert to fraction form
    8,725.84/13,092.60 = 6,388.08/x
  3. Step 3: Cross multiply
    8,725.84x = 13,092.60 × 6,388.08
  4. Step 4: Simplify right side
    8,725.84x = 83,636,576.21
  5. Step 5: Solve for x
    x = 83,636,576.21/8,725.84
  6. Step 6: Final answer
    x = 9,584.93

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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.