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Finding the Fourth Proportional to 8,975.86, 12,387.10 and 4,997.24

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Solution

The fourth proportional to 8,975.86, 12,387.10 and 4,997.24 is: 6,896.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.86 : 12,387.10 = 4,997.24 : x
  2. Step 2: Convert to fraction form
    8,975.86/12,387.10 = 4,997.24/x
  3. Step 3: Cross multiply
    8,975.86x = 12,387.10 × 4,997.24
  4. Step 4: Simplify right side
    8,975.86x = 61,901,311.60
  5. Step 5: Solve for x
    x = 61,901,311.60/8,975.86
  6. Step 6: Final answer
    x = 6,896.42

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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.