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Finding the Fourth Proportional to 618,409.91, 927,601.64 and 169,130.78

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Solution

The fourth proportional to 618,409.91, 927,601.64 and 169,130.78 is: 253,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,409.91 : 927,601.64 = 169,130.78 : x
  2. Step 2: Convert to fraction form
    618,409.91/927,601.64 = 169,130.78/x
  3. Step 3: Cross multiply
    618,409.91x = 927,601.64 × 169,130.78
  4. Step 4: Simplify right side
    618,409.91x = 156,885,984,687.30
  5. Step 5: Solve for x
    x = 156,885,984,687.30/618,409.91
  6. Step 6: Final answer
    x = 253,692.55

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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.