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Finding the Fourth Proportional to 317,713.12, 476,466 and 140,212.96

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Solution

The fourth proportional to 317,713.12, 476,466 and 140,212.96 is: 210,273.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,713.12 : 476,466 = 140,212.96 : x
  2. Step 2: Convert to fraction form
    317,713.12/476,466 = 140,212.96/x
  3. Step 3: Cross multiply
    317,713.12x = 476,466 × 140,212.96
  4. Step 4: Simplify right side
    317,713.12x = 66,806,708,199.36
  5. Step 5: Solve for x
    x = 66,806,708,199.36/317,713.12
  6. Step 6: Final answer
    x = 210,273.68

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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.