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Finding the Fourth Proportional to 3,270,684.48, 4,905,640.32 and 874,714.82

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Solution

The fourth proportional to 3,270,684.48, 4,905,640.32 and 874,714.82 is: 1,311,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270,684.48 : 4,905,640.32 = 874,714.82 : x
  2. Step 2: Convert to fraction form
    3,270,684.48/4,905,640.32 = 874,714.82/x
  3. Step 3: Cross multiply
    3,270,684.48x = 4,905,640.32 × 874,714.82
  4. Step 4: Simplify right side
    3,270,684.48x = 4,291,036,289,493.54
  5. Step 5: Solve for x
    x = 4,291,036,289,493.54/3,270,684.48
  6. Step 6: Final answer
    x = 1,311,968.89

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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.