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Finding the Third Proportional to 53,639,138 and 80,458,748

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Solution

The third proportional to 53,639,138 and 80,458,748 is: 120,688,183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,639,138 : 80,458,748 = 80,458,748 : x
  2. Step 2: Convert to fraction form
    53,639,138/80,458,748 = 80,458,748/x
  3. Step 3: Cross multiply
    53,639,138x = 80,458,748 × 80,458,748
  4. Step 4: Simplify right side
    53,639,138x = 6,473,610,129,727,504
  5. Step 5: Solve for x
    x = 6,473,610,129,727,504/53,639,138
  6. Step 6: Final answer
    x = 120,688,183.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.