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Finding the Fourth Proportional to 705,501.22, 973,604.16 and 399,640.62

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Solution

The fourth proportional to 705,501.22, 973,604.16 and 399,640.62 is: 551,511.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,501.22 : 973,604.16 = 399,640.62 : x
  2. Step 2: Convert to fraction form
    705,501.22/973,604.16 = 399,640.62/x
  3. Step 3: Cross multiply
    705,501.22x = 973,604.16 × 399,640.62
  4. Step 4: Simplify right side
    705,501.22x = 389,091,770,136.98
  5. Step 5: Solve for x
    x = 389,091,770,136.98/705,501.22
  6. Step 6: Final answer
    x = 551,511.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.