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Finding the Fourth Proportional to 8,975.25, 12,386.66 and 5,249.25

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Solution

The fourth proportional to 8,975.25, 12,386.66 and 5,249.25 is: 7,244.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.25 : 12,386.66 = 5,249.25 : x
  2. Step 2: Convert to fraction form
    8,975.25/12,386.66 = 5,249.25/x
  3. Step 3: Cross multiply
    8,975.25x = 12,386.66 × 5,249.25
  4. Step 4: Simplify right side
    8,975.25x = 65,020,648.76
  5. Step 5: Solve for x
    x = 65,020,648.76/8,975.25
  6. Step 6: Final answer
    x = 7,244.44

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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.