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Finding the Fourth Proportional to 8,976.86, 12,388.48 and 4,998.24

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Solution

The fourth proportional to 8,976.86, 12,388.48 and 4,998.24 is: 6,897.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.86 : 12,388.48 = 4,998.24 : x
  2. Step 2: Convert to fraction form
    8,976.86/12,388.48 = 4,998.24/x
  3. Step 3: Cross multiply
    8,976.86x = 12,388.48 × 4,998.24
  4. Step 4: Simplify right side
    8,976.86x = 61,920,596.28
  5. Step 5: Solve for x
    x = 61,920,596.28/8,976.86
  6. Step 6: Final answer
    x = 6,897.80

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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.