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Finding the Fourth Proportional to 8,976.94, 12,387.90 and 4,997.96

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Solution

The fourth proportional to 8,976.94, 12,387.90 and 4,997.96 is: 6,897.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.94 : 12,387.90 = 4,997.96 : x
  2. Step 2: Convert to fraction form
    8,976.94/12,387.90 = 4,997.96/x
  3. Step 3: Cross multiply
    8,976.94x = 12,387.90 × 4,997.96
  4. Step 4: Simplify right side
    8,976.94x = 61,914,228.68
  5. Step 5: Solve for x
    x = 61,914,228.68/8,976.94
  6. Step 6: Final answer
    x = 6,897.03

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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.