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Finding the Fourth Proportional to 328,516.40, 453,351.66 and 177,613.40

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Solution

The fourth proportional to 328,516.40, 453,351.66 and 177,613.40 is: 245,105.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,516.40 : 453,351.66 = 177,613.40 : x
  2. Step 2: Convert to fraction form
    328,516.40/453,351.66 = 177,613.40/x
  3. Step 3: Cross multiply
    328,516.40x = 453,351.66 × 177,613.40
  4. Step 4: Simplify right side
    328,516.40x = 80,521,329,728.24
  5. Step 5: Solve for x
    x = 80,521,329,728.24/328,516.40
  6. Step 6: Final answer
    x = 245,105.97

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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.