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Finding the Third Proportional to 261,992,721 and 393,180,889.50

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Solution

The third proportional to 261,992,721 and 393,180,889.50 is: 590,059,186.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,992,721 : 393,180,889.50 = 393,180,889.50 : x
  2. Step 2: Convert to fraction form
    261,992,721/393,180,889.50 = 393,180,889.50/x
  3. Step 3: Cross multiply
    261,992,721x = 393,180,889.50 × 393,180,889.50
  4. Step 4: Simplify right side
    261,992,721x = 154,591,211,868,011,200
  5. Step 5: Solve for x
    x = 154,591,211,868,011,200/261,992,721
  6. Step 6: Final answer
    x = 590,059,186.67

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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.