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Finding the Third Proportional to 187,860,840 and 403,502,520

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Solution

The third proportional to 187,860,840 and 403,502,520 is: 866,674,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,860,840 : 403,502,520 = 403,502,520 : x
  2. Step 2: Convert to fraction form
    187,860,840/403,502,520 = 403,502,520/x
  3. Step 3: Cross multiply
    187,860,840x = 403,502,520 × 403,502,520
  4. Step 4: Simplify right side
    187,860,840x = 162,814,283,646,350,400
  5. Step 5: Solve for x
    x = 162,814,283,646,350,400/187,860,840
  6. Step 6: Final answer
    x = 866,674,947.51

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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.