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Finding the Third Proportional to 18,439,472,578 and 39,675,631,671

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Solution

The third proportional to 18,439,472,578 and 39,675,631,671 is: 85,368,805,524.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439,472,578 : 39,675,631,671 = 39,675,631,671 : x
  2. Step 2: Convert to fraction form
    18,439,472,578/39,675,631,671 = 39,675,631,671/x
  3. Step 3: Cross multiply
    18,439,472,578x = 39,675,631,671 × 39,675,631,671
  4. Step 4: Simplify right side
    18,439,472,578x = 1,574,155,748,492,858,359,808
  5. Step 5: Solve for x
    x = 1,574,155,748,492,858,359,808/18,439,472,578
  6. Step 6: Final answer
    x = 85,368,805,524.89

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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.