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Finding the Third Proportional to 8,821,887,128 and 13,658,222,820

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Solution

The third proportional to 8,821,887,128 and 13,658,222,820 is: 21,145,934,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821,887,128 : 13,658,222,820 = 13,658,222,820 : x
  2. Step 2: Convert to fraction form
    8,821,887,128/13,658,222,820 = 13,658,222,820/x
  3. Step 3: Cross multiply
    8,821,887,128x = 13,658,222,820 × 13,658,222,820
  4. Step 4: Simplify right side
    8,821,887,128x = 186,547,050,600,768,765,952
  5. Step 5: Solve for x
    x = 186,547,050,600,768,765,952/8,821,887,128
  6. Step 6: Final answer
    x = 21,145,934,865.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.