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Finding the Fourth Proportional to 618,761.16, 928,008.09 and 219,414.96

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Solution

The fourth proportional to 618,761.16, 928,008.09 and 219,414.96 is: 329,075.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,761.16 : 928,008.09 = 219,414.96 : x
  2. Step 2: Convert to fraction form
    618,761.16/928,008.09 = 219,414.96/x
  3. Step 3: Cross multiply
    618,761.16x = 928,008.09 × 219,414.96
  4. Step 4: Simplify right side
    618,761.16x = 203,618,857,947.03
  5. Step 5: Solve for x
    x = 203,618,857,947.03/618,761.16
  6. Step 6: Final answer
    x = 329,075.05

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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.