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Finding the Fourth Proportional to 638,191.56, 957,401.20 and 211,752.98

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Solution

The fourth proportional to 638,191.56, 957,401.20 and 211,752.98 is: 317,667.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,191.56 : 957,401.20 = 211,752.98 : x
  2. Step 2: Convert to fraction form
    638,191.56/957,401.20 = 211,752.98/x
  3. Step 3: Cross multiply
    638,191.56x = 957,401.20 × 211,752.98
  4. Step 4: Simplify right side
    638,191.56x = 202,732,557,155.58
  5. Step 5: Solve for x
    x = 202,732,557,155.58/638,191.56
  6. Step 6: Final answer
    x = 317,667.25

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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.