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Finding the Fourth Proportional to 358,130.16, 494,209.19 and 196,985.16

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Solution

The fourth proportional to 358,130.16, 494,209.19 and 196,985.16 is: 271,833.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,130.16 : 494,209.19 = 196,985.16 : x
  2. Step 2: Convert to fraction form
    358,130.16/494,209.19 = 196,985.16/x
  3. Step 3: Cross multiply
    358,130.16x = 494,209.19 × 196,985.16
  4. Step 4: Simplify right side
    358,130.16x = 97,351,876,858.08
  5. Step 5: Solve for x
    x = 97,351,876,858.08/358,130.16
  6. Step 6: Final answer
    x = 271,833.78

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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.