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Finding the Third Proportional to 9,931,329 and 21,332,430

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Solution

The third proportional to 9,931,329 and 21,332,430 is: 45,821,920.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,931,329 : 21,332,430 = 21,332,430 : x
  2. Step 2: Convert to fraction form
    9,931,329/21,332,430 = 21,332,430/x
  3. Step 3: Cross multiply
    9,931,329x = 21,332,430 × 21,332,430
  4. Step 4: Simplify right side
    9,931,329x = 455,072,569,704,900
  5. Step 5: Solve for x
    x = 455,072,569,704,900/9,931,329
  6. Step 6: Final answer
    x = 45,821,920.68

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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.