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Finding the Third Proportional to 19,886,356 and 30,708,690

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Solution

The third proportional to 19,886,356 and 30,708,690 is: 47,420,635.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886,356 : 30,708,690 = 30,708,690 : x
  2. Step 2: Convert to fraction form
    19,886,356/30,708,690 = 30,708,690/x
  3. Step 3: Cross multiply
    19,886,356x = 30,708,690 × 30,708,690
  4. Step 4: Simplify right side
    19,886,356x = 943,023,641,516,100
  5. Step 5: Solve for x
    x = 943,023,641,516,100/19,886,356
  6. Step 6: Final answer
    x = 47,420,635.61

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.