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Finding the Fourth Proportional to 196,912.80, 295,369.20 and 91,742.40

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Solution

The fourth proportional to 196,912.80, 295,369.20 and 91,742.40 is: 137,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,912.80 : 295,369.20 = 91,742.40 : x
  2. Step 2: Convert to fraction form
    196,912.80/295,369.20 = 91,742.40/x
  3. Step 3: Cross multiply
    196,912.80x = 295,369.20 × 91,742.40
  4. Step 4: Simplify right side
    196,912.80x = 27,097,879,294.08
  5. Step 5: Solve for x
    x = 27,097,879,294.08/196,912.80
  6. Step 6: Final answer
    x = 137,613.60

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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.