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Finding the Fourth Proportional to 621,311.49, 930,472.47 and 354,262.41

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Solution

The fourth proportional to 621,311.49, 930,472.47 and 354,262.41 is: 530,541.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,311.49 : 930,472.47 = 354,262.41 : x
  2. Step 2: Convert to fraction form
    621,311.49/930,472.47 = 354,262.41/x
  3. Step 3: Cross multiply
    621,311.49x = 930,472.47 × 354,262.41
  4. Step 4: Simplify right side
    621,311.49x = 329,631,419,660.85
  5. Step 5: Solve for x
    x = 329,631,419,660.85/621,311.49
  6. Step 6: Final answer
    x = 530,541.32

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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.