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Finding the Fourth Proportional to 349,938.94, 482,931.03 and 196,987

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Solution

The fourth proportional to 349,938.94, 482,931.03 and 196,987 is: 271,850.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,938.94 : 482,931.03 = 196,987 : x
  2. Step 2: Convert to fraction form
    349,938.94/482,931.03 = 196,987/x
  3. Step 3: Cross multiply
    349,938.94x = 482,931.03 × 196,987
  4. Step 4: Simplify right side
    349,938.94x = 95,131,134,806.61
  5. Step 5: Solve for x
    x = 95,131,134,806.61/349,938.94
  6. Step 6: Final answer
    x = 271,850.67

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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.