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Finding the Third Proportional to 12,157,686.56 and 18,804,652.88

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Solution

The third proportional to 12,157,686.56 and 18,804,652.88 is: 29,085,711.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157,686.56 : 18,804,652.88 = 18,804,652.88 : x
  2. Step 2: Convert to fraction form
    12,157,686.56/18,804,652.88 = 18,804,652.88/x
  3. Step 3: Cross multiply
    12,157,686.56x = 18,804,652.88 × 18,804,652.88
  4. Step 4: Simplify right side
    12,157,686.56x = 353,614,969,749,245.75
  5. Step 5: Solve for x
    x = 353,614,969,749,245.75/12,157,686.56
  6. Step 6: Final answer
    x = 29,085,711.98

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.