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Finding the Third Proportional to 191,971,516 and 309,137,370

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Solution

The third proportional to 191,971,516 and 309,137,370 is: 497,812,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,971,516 : 309,137,370 = 309,137,370 : x
  2. Step 2: Convert to fraction form
    191,971,516/309,137,370 = 309,137,370/x
  3. Step 3: Cross multiply
    191,971,516x = 309,137,370 × 309,137,370
  4. Step 4: Simplify right side
    191,971,516x = 95,565,913,530,516,896
  5. Step 5: Solve for x
    x = 95,565,913,530,516,896/191,971,516
  6. Step 6: Final answer
    x = 497,812,985.60

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.