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Finding the Fourth Proportional to 196,390.56, 271,019.04 and 106,966.56

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Solution

The fourth proportional to 196,390.56, 271,019.04 and 106,966.56 is: 147,613.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,390.56 : 271,019.04 = 106,966.56 : x
  2. Step 2: Convert to fraction form
    196,390.56/271,019.04 = 106,966.56/x
  3. Step 3: Cross multiply
    196,390.56x = 271,019.04 × 106,966.56
  4. Step 4: Simplify right side
    196,390.56x = 28,989,974,403.30
  5. Step 5: Solve for x
    x = 28,989,974,403.30/196,390.56
  6. Step 6: Final answer
    x = 147,613.89

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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.