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Finding the Fourth Proportional to 622,620.15, 853,611.43 and 611,269.92

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Solution

The fourth proportional to 622,620.15, 853,611.43 and 611,269.92 is: 838,050.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,620.15 : 853,611.43 = 611,269.92 : x
  2. Step 2: Convert to fraction form
    622,620.15/853,611.43 = 611,269.92/x
  3. Step 3: Cross multiply
    622,620.15x = 853,611.43 × 611,269.92
  4. Step 4: Simplify right side
    622,620.15x = 521,786,990,527.19
  5. Step 5: Solve for x
    x = 521,786,990,527.19/622,620.15
  6. Step 6: Final answer
    x = 838,050.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.