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Finding the Fourth Proportional to 621,555.56, 857,216.74 and 525,229.80

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Solution

The fourth proportional to 621,555.56, 857,216.74 and 525,229.80 is: 724,369.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,555.56 : 857,216.74 = 525,229.80 : x
  2. Step 2: Convert to fraction form
    621,555.56/857,216.74 = 525,229.80/x
  3. Step 3: Cross multiply
    621,555.56x = 857,216.74 × 525,229.80
  4. Step 4: Simplify right side
    621,555.56x = 450,235,776,906.85
  5. Step 5: Solve for x
    x = 450,235,776,906.85/621,555.56
  6. Step 6: Final answer
    x = 724,369.32

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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.