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Finding the Fourth Proportional to 621,025.80, 930,882.60 and 354,211.80

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Solution

The fourth proportional to 621,025.80, 930,882.60 and 354,211.80 is: 530,943.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,025.80 : 930,882.60 = 354,211.80 : x
  2. Step 2: Convert to fraction form
    621,025.80/930,882.60 = 354,211.80/x
  3. Step 3: Cross multiply
    621,025.80x = 930,882.60 × 354,211.80
  4. Step 4: Simplify right side
    621,025.80x = 329,729,601,334.68
  5. Step 5: Solve for x
    x = 329,729,601,334.68/621,025.80
  6. Step 6: Final answer
    x = 530,943.48

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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.