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Finding the Fourth Proportional to 606,912.70, 910,369.05 and 417,955.90

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Solution

The fourth proportional to 606,912.70, 910,369.05 and 417,955.90 is: 626,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,912.70 : 910,369.05 = 417,955.90 : x
  2. Step 2: Convert to fraction form
    606,912.70/910,369.05 = 417,955.90/x
  3. Step 3: Cross multiply
    606,912.70x = 910,369.05 × 417,955.90
  4. Step 4: Simplify right side
    606,912.70x = 380,494,115,624.90
  5. Step 5: Solve for x
    x = 380,494,115,624.90/606,912.70
  6. Step 6: Final answer
    x = 626,933.85

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Similar ratio
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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.