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Finding the Third Proportional to 292,561,220 and 629,151,880

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Solution

The third proportional to 292,561,220 and 629,151,880 is: 1,352,988,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,561,220 : 629,151,880 = 629,151,880 : x
  2. Step 2: Convert to fraction form
    292,561,220/629,151,880 = 629,151,880/x
  3. Step 3: Cross multiply
    292,561,220x = 629,151,880 × 629,151,880
  4. Step 4: Simplify right side
    292,561,220x = 395,832,088,107,534,400
  5. Step 5: Solve for x
    x = 395,832,088,107,534,400/292,561,220
  6. Step 6: Final answer
    x = 1,352,988,916.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.