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Finding the Fourth Proportional to 317,842.40, 476,326.20 and 210,922.40

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Solution

The fourth proportional to 317,842.40, 476,326.20 and 210,922.40 is: 316,093.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,842.40 : 476,326.20 = 210,922.40 : x
  2. Step 2: Convert to fraction form
    317,842.40/476,326.20 = 210,922.40/x
  3. Step 3: Cross multiply
    317,842.40x = 476,326.20 × 210,922.40
  4. Step 4: Simplify right side
    317,842.40x = 100,467,865,286.88
  5. Step 5: Solve for x
    x = 100,467,865,286.88/317,842.40
  6. Step 6: Final answer
    x = 316,093.34

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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.