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Finding the Fourth Proportional to 242,849.01, 364,274.20 and 85,040.56

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Solution

The fourth proportional to 242,849.01, 364,274.20 and 85,040.56 is: 127,561.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,849.01 : 364,274.20 = 85,040.56 : x
  2. Step 2: Convert to fraction form
    242,849.01/364,274.20 = 85,040.56/x
  3. Step 3: Cross multiply
    242,849.01x = 364,274.20 × 85,040.56
  4. Step 4: Simplify right side
    242,849.01x = 30,978,082,762.37
  5. Step 5: Solve for x
    x = 30,978,082,762.37/242,849.01
  6. Step 6: Final answer
    x = 127,561.08

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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.