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Finding the Fourth Proportional to 539,636.34, 744,699.09 and 297,919.30

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Solution

The fourth proportional to 539,636.34, 744,699.09 and 297,919.30 is: 411,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,636.34 : 744,699.09 = 297,919.30 : x
  2. Step 2: Convert to fraction form
    539,636.34/744,699.09 = 297,919.30/x
  3. Step 3: Cross multiply
    539,636.34x = 744,699.09 × 297,919.30
  4. Step 4: Simplify right side
    539,636.34x = 221,860,231,603.44
  5. Step 5: Solve for x
    x = 221,860,231,603.44/539,636.34
  6. Step 6: Final answer
    x = 411,129.15

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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.