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Finding the Fourth Proportional to 358,139.98, 494,225.10 and 196,991.49

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Solution

The fourth proportional to 358,139.98, 494,225.10 and 196,991.49 is: 271,843.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,139.98 : 494,225.10 = 196,991.49 : x
  2. Step 2: Convert to fraction form
    358,139.98/494,225.10 = 196,991.49/x
  3. Step 3: Cross multiply
    358,139.98x = 494,225.10 × 196,991.49
  4. Step 4: Simplify right side
    358,139.98x = 97,358,138,844.40
  5. Step 5: Solve for x
    x = 97,358,138,844.40/358,139.98
  6. Step 6: Final answer
    x = 271,843.82

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1.5x scale

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.