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Finding the Third Proportional to 86,198,820 and 191,529,518

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Solution

The third proportional to 86,198,820 and 191,529,518 is: 425,569,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,198,820 : 191,529,518 = 191,529,518 : x
  2. Step 2: Convert to fraction form
    86,198,820/191,529,518 = 191,529,518/x
  3. Step 3: Cross multiply
    86,198,820x = 191,529,518 × 191,529,518
  4. Step 4: Simplify right side
    86,198,820x = 36,683,556,265,312,320
  5. Step 5: Solve for x
    x = 36,683,556,265,312,320/86,198,820
  6. Step 6: Final answer
    x = 425,569,123.40

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.