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Finding the Fourth Proportional to 313,717.80, 470,576.70 and 266,478.60

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Solution

The fourth proportional to 313,717.80, 470,576.70 and 266,478.60 is: 399,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,717.80 : 470,576.70 = 266,478.60 : x
  2. Step 2: Convert to fraction form
    313,717.80/470,576.70 = 266,478.60/x
  3. Step 3: Cross multiply
    313,717.80x = 470,576.70 × 266,478.60
  4. Step 4: Simplify right side
    313,717.80x = 125,398,620,208.62
  5. Step 5: Solve for x
    x = 125,398,620,208.62/313,717.80
  6. Step 6: Final answer
    x = 399,717.90

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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.