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Finding the Fourth Proportional to 618,457.20, 927,588.60 and 219,040.80

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Solution

The fourth proportional to 618,457.20, 927,588.60 and 219,040.80 is: 328,526.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,457.20 : 927,588.60 = 219,040.80 : x
  2. Step 2: Convert to fraction form
    618,457.20/927,588.60 = 219,040.80/x
  3. Step 3: Cross multiply
    618,457.20x = 927,588.60 × 219,040.80
  4. Step 4: Simplify right side
    618,457.20x = 203,179,749,014.88
  5. Step 5: Solve for x
    x = 203,179,749,014.88/618,457.20
  6. Step 6: Final answer
    x = 328,526.77

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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.