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Finding the Fourth Proportional to 4,981,612.54, 7,472,846.98 and 1,387,379.49

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Solution

The fourth proportional to 4,981,612.54, 7,472,846.98 and 1,387,379.49 is: 2,081,188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,981,612.54 : 7,472,846.98 = 1,387,379.49 : x
  2. Step 2: Convert to fraction form
    4,981,612.54/7,472,846.98 = 1,387,379.49/x
  3. Step 3: Cross multiply
    4,981,612.54x = 7,472,846.98 × 1,387,379.49
  4. Step 4: Simplify right side
    4,981,612.54x = 10,367,674,649,657.19
  5. Step 5: Solve for x
    x = 10,367,674,649,657.19/4,981,612.54
  6. Step 6: Final answer
    x = 2,081,188.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.