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Finding the Third Proportional to 21,572,947 and 46,347,661

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Solution

The third proportional to 21,572,947 and 46,347,661 is: 99,574,048.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572,947 : 46,347,661 = 46,347,661 : x
  2. Step 2: Convert to fraction form
    21,572,947/46,347,661 = 46,347,661/x
  3. Step 3: Cross multiply
    21,572,947x = 46,347,661 × 46,347,661
  4. Step 4: Simplify right side
    21,572,947x = 2,148,105,680,170,921
  5. Step 5: Solve for x
    x = 2,148,105,680,170,921/21,572,947
  6. Step 6: Final answer
    x = 99,574,048.93

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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.