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Finding the Fourth Proportional to 317,625.40, 476,000.70 and 210,705.40

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Solution

The fourth proportional to 317,625.40, 476,000.70 and 210,705.40 is: 315,767.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,625.40 : 476,000.70 = 210,705.40 : x
  2. Step 2: Convert to fraction form
    317,625.40/476,000.70 = 210,705.40/x
  3. Step 3: Cross multiply
    317,625.40x = 476,000.70 × 210,705.40
  4. Step 4: Simplify right side
    317,625.40x = 100,295,917,893.78
  5. Step 5: Solve for x
    x = 100,295,917,893.78/317,625.40
  6. Step 6: Final answer
    x = 315,767.94

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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.