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Finding the Fourth Proportional to 313,670,574.40, 470,505,861.60 and 288,588,308.80

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Solution

The fourth proportional to 313,670,574.40, 470,505,861.60 and 288,588,308.80 is: 432,882,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,670,574.40 : 470,505,861.60 = 288,588,308.80 : x
  2. Step 2: Convert to fraction form
    313,670,574.40/470,505,861.60 = 288,588,308.80/x
  3. Step 3: Cross multiply
    313,670,574.40x = 470,505,861.60 × 288,588,308.80
  4. Step 4: Simplify right side
    313,670,574.40x = 135,782,490,879,630,880
  5. Step 5: Solve for x
    x = 135,782,490,879,630,880/313,670,574.40
  6. Step 6: Final answer
    x = 432,882,463.20

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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.