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Finding the Fourth Proportional to 358,124.20, 494,211.63 and 196,991.50

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Solution

The fourth proportional to 358,124.20, 494,211.63 and 196,991.50 is: 271,848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,124.20 : 494,211.63 = 196,991.50 : x
  2. Step 2: Convert to fraction form
    358,124.20/494,211.63 = 196,991.50/x
  3. Step 3: Cross multiply
    358,124.20x = 494,211.63 × 196,991.50
  4. Step 4: Simplify right side
    358,124.20x = 97,355,490,311.15
  5. Step 5: Solve for x
    x = 97,355,490,311.15/358,124.20
  6. Step 6: Final answer
    x = 271,848.40

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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.