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Finding the Fourth Proportional to 8,907.75, 12,292.59 and 5,324.31

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Solution

The fourth proportional to 8,907.75, 12,292.59 and 5,324.31 is: 7,347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907.75 : 12,292.59 = 5,324.31 : x
  2. Step 2: Convert to fraction form
    8,907.75/12,292.59 = 5,324.31/x
  3. Step 3: Cross multiply
    8,907.75x = 12,292.59 × 5,324.31
  4. Step 4: Simplify right side
    8,907.75x = 65,449,559.86
  5. Step 5: Solve for x
    x = 65,449,559.86/8,907.75
  6. Step 6: Final answer
    x = 7,347.49

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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.