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Finding the Fourth Proportional to 543,090.93, 814,676.38 and 143,729.02

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Solution

The fourth proportional to 543,090.93, 814,676.38 and 143,729.02 is: 215,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,090.93 : 814,676.38 = 143,729.02 : x
  2. Step 2: Convert to fraction form
    543,090.93/814,676.38 = 143,729.02/x
  3. Step 3: Cross multiply
    543,090.93x = 814,676.38 × 143,729.02
  4. Step 4: Simplify right side
    543,090.93x = 117,092,634,599.49
  5. Step 5: Solve for x
    x = 117,092,634,599.49/543,090.93
  6. Step 6: Final answer
    x = 215,604.10

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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.