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Finding the Fourth Proportional to 264,297.90, 396,443.30 and 64,620

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Solution

The fourth proportional to 264,297.90, 396,443.30 and 64,620 is: 96,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,297.90 : 396,443.30 = 64,620 : x
  2. Step 2: Convert to fraction form
    264,297.90/396,443.30 = 64,620/x
  3. Step 3: Cross multiply
    264,297.90x = 396,443.30 × 64,620
  4. Step 4: Simplify right side
    264,297.90x = 25,618,166,046
  5. Step 5: Solve for x
    x = 25,618,166,046/264,297.90
  6. Step 6: Final answer
    x = 96,929.13

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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.