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Finding the Fourth Proportional to 317,142,448.20, 445,019,794.20 and 317,142,448.20

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Solution

The fourth proportional to 317,142,448.20, 445,019,794.20 and 317,142,448.20 is: 445,019,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,142,448.20 : 445,019,794.20 = 317,142,448.20 : x
  2. Step 2: Convert to fraction form
    317,142,448.20/445,019,794.20 = 317,142,448.20/x
  3. Step 3: Cross multiply
    317,142,448.20x = 445,019,794.20 × 317,142,448.20
  4. Step 4: Simplify right side
    317,142,448.20x = 141,134,667,030,048,144
  5. Step 5: Solve for x
    x = 141,134,667,030,048,144/317,142,448.20
  6. Step 6: Final answer
    x = 445,019,794.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.