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Finding the Third Proportional to 21,455,140 and 46,991,556

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Solution

The third proportional to 21,455,140 and 46,991,556 is: 102,922,019.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,455,140 : 46,991,556 = 46,991,556 : x
  2. Step 2: Convert to fraction form
    21,455,140/46,991,556 = 46,991,556/x
  3. Step 3: Cross multiply
    21,455,140x = 46,991,556 × 46,991,556
  4. Step 4: Simplify right side
    21,455,140x = 2,208,206,335,301,136
  5. Step 5: Solve for x
    x = 2,208,206,335,301,136/21,455,140
  6. Step 6: Final answer
    x = 102,922,019.40

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.