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Finding the Fourth Proportional to 489,090.12, 733,636.26 and 134,109.24

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Solution

The fourth proportional to 489,090.12, 733,636.26 and 134,109.24 is: 201,164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,090.12 : 733,636.26 = 134,109.24 : x
  2. Step 2: Convert to fraction form
    489,090.12/733,636.26 = 134,109.24/x
  3. Step 3: Cross multiply
    489,090.12x = 733,636.26 × 134,109.24
  4. Step 4: Simplify right side
    489,090.12x = 98,387,401,265.04
  5. Step 5: Solve for x
    x = 98,387,401,265.04/489,090.12
  6. Step 6: Final answer
    x = 201,164.16

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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.