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Finding the Fourth Proportional to 318,626.20, 477,939.30 and 176,908.60

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Solution

The fourth proportional to 318,626.20, 477,939.30 and 176,908.60 is: 265,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,626.20 : 477,939.30 = 176,908.60 : x
  2. Step 2: Convert to fraction form
    318,626.20/477,939.30 = 176,908.60/x
  3. Step 3: Cross multiply
    318,626.20x = 477,939.30 × 176,908.60
  4. Step 4: Simplify right side
    318,626.20x = 84,551,572,447.98
  5. Step 5: Solve for x
    x = 84,551,572,447.98/318,626.20
  6. Step 6: Final answer
    x = 265,362.90

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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.