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Finding the Fourth Proportional to 398,604,889.80, 597,907,334.70 and 111,390,553.80

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Solution

The fourth proportional to 398,604,889.80, 597,907,334.70 and 111,390,553.80 is: 167,085,830.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,604,889.80 : 597,907,334.70 = 111,390,553.80 : x
  2. Step 2: Convert to fraction form
    398,604,889.80/597,907,334.70 = 111,390,553.80/x
  3. Step 3: Cross multiply
    398,604,889.80x = 597,907,334.70 × 111,390,553.80
  4. Step 4: Simplify right side
    398,604,889.80x = 66,601,229,133,314,960
  5. Step 5: Solve for x
    x = 66,601,229,133,314,960/398,604,889.80
  6. Step 6: Final answer
    x = 167,085,830.70

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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.