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Finding the Fourth Proportional to 641,805.34, 962,817.34 and 322,109.68

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Solution

The fourth proportional to 641,805.34, 962,817.34 and 322,109.68 is: 483,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,805.34 : 962,817.34 = 322,109.68 : x
  2. Step 2: Convert to fraction form
    641,805.34/962,817.34 = 322,109.68/x
  3. Step 3: Cross multiply
    641,805.34x = 962,817.34 × 322,109.68
  4. Step 4: Simplify right side
    641,805.34x = 310,132,785,285.85
  5. Step 5: Solve for x
    x = 310,132,785,285.85/641,805.34
  6. Step 6: Final answer
    x = 483,219.39

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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.