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Finding the Fourth Proportional to 317,711.94, 476,660.15 and 128,074.44

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Solution

The fourth proportional to 317,711.94, 476,660.15 and 128,074.44 is: 192,148.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,711.94 : 476,660.15 = 128,074.44 : x
  2. Step 2: Convert to fraction form
    317,711.94/476,660.15 = 128,074.44/x
  3. Step 3: Cross multiply
    317,711.94x = 476,660.15 × 128,074.44
  4. Step 4: Simplify right side
    317,711.94x = 61,047,981,781.57
  5. Step 5: Solve for x
    x = 61,047,981,781.57/317,711.94
  6. Step 6: Final answer
    x = 192,148.84

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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.