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Finding the Fourth Proportional to 618,455.20, 927,585.60 and 219,038.80

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Solution

The fourth proportional to 618,455.20, 927,585.60 and 219,038.80 is: 328,523.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,455.20 : 927,585.60 = 219,038.80 : x
  2. Step 2: Convert to fraction form
    618,455.20/927,585.60 = 219,038.80/x
  3. Step 3: Cross multiply
    618,455.20x = 927,585.60 × 219,038.80
  4. Step 4: Simplify right side
    618,455.20x = 203,177,236,721.28
  5. Step 5: Solve for x
    x = 203,177,236,721.28/618,455.20
  6. Step 6: Final answer
    x = 328,523.77

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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.