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Finding the Fourth Proportional to 322,403.20, 482,683.20 and 313,187.20

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Solution

The fourth proportional to 322,403.20, 482,683.20 and 313,187.20 is: 468,885.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,403.20 : 482,683.20 = 313,187.20 : x
  2. Step 2: Convert to fraction form
    322,403.20/482,683.20 = 313,187.20/x
  3. Step 3: Cross multiply
    322,403.20x = 482,683.20 × 313,187.20
  4. Step 4: Simplify right side
    322,403.20x = 151,170,199,895.04
  5. Step 5: Solve for x
    x = 151,170,199,895.04/322,403.20
  6. Step 6: Final answer
    x = 468,885.54

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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.