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Finding the Fourth Proportional to 237,390, 327,598.20 and 131,406

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Solution

The fourth proportional to 237,390, 327,598.20 and 131,406 is: 181,340.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,390 : 327,598.20 = 131,406 : x
  2. Step 2: Convert to fraction form
    237,390/327,598.20 = 131,406/x
  3. Step 3: Cross multiply
    237,390x = 327,598.20 × 131,406
  4. Step 4: Simplify right side
    237,390x = 43,048,369,069.20
  5. Step 5: Solve for x
    x = 43,048,369,069.20/237,390
  6. Step 6: Final answer
    x = 181,340.28

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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.