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Finding the Fourth Proportional to 237,055.61, 355,343.18 and 85,207.43

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Solution

The fourth proportional to 237,055.61, 355,343.18 and 85,207.43 is: 127,724.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,055.61 : 355,343.18 = 85,207.43 : x
  2. Step 2: Convert to fraction form
    237,055.61/355,343.18 = 85,207.43/x
  3. Step 3: Cross multiply
    237,055.61x = 355,343.18 × 85,207.43
  4. Step 4: Simplify right side
    237,055.61x = 30,277,876,933.07
  5. Step 5: Solve for x
    x = 30,277,876,933.07/237,055.61
  6. Step 6: Final answer
    x = 127,724.79

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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.