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Finding the Third Proportional to 83,194,478 and 129,828,153

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Solution

The third proportional to 83,194,478 and 129,828,153 is: 202,601,779.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,194,478 : 129,828,153 = 129,828,153 : x
  2. Step 2: Convert to fraction form
    83,194,478/129,828,153 = 129,828,153/x
  3. Step 3: Cross multiply
    83,194,478x = 129,828,153 × 129,828,153
  4. Step 4: Simplify right side
    83,194,478x = 16,855,349,311,391,408
  5. Step 5: Solve for x
    x = 16,855,349,311,391,408/83,194,478
  6. Step 6: Final answer
    x = 202,601,779.79

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.