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Finding the Fourth Proportional to 663,920.36, 995,370.06 and 343,728.98

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Solution

The fourth proportional to 663,920.36, 995,370.06 and 343,728.98 is: 515,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,920.36 : 995,370.06 = 343,728.98 : x
  2. Step 2: Convert to fraction form
    663,920.36/995,370.06 = 343,728.98/x
  3. Step 3: Cross multiply
    663,920.36x = 995,370.06 × 343,728.98
  4. Step 4: Simplify right side
    663,920.36x = 342,137,535,446.34
  5. Step 5: Solve for x
    x = 342,137,535,446.34/663,920.36
  6. Step 6: Final answer
    x = 515,329.18

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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.