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Finding the Fourth Proportional to 194,613.20, 291,919.80 and 163,120.40

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Solution

The fourth proportional to 194,613.20, 291,919.80 and 163,120.40 is: 244,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,613.20 : 291,919.80 = 163,120.40 : x
  2. Step 2: Convert to fraction form
    194,613.20/291,919.80 = 163,120.40/x
  3. Step 3: Cross multiply
    194,613.20x = 291,919.80 × 163,120.40
  4. Step 4: Simplify right side
    194,613.20x = 47,618,074,543.92
  5. Step 5: Solve for x
    x = 47,618,074,543.92/194,613.20
  6. Step 6: Final answer
    x = 244,680.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.