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Finding the Third Proportional to 5,387,595.19 and 8,364,690.28

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Solution

The third proportional to 5,387,595.19 and 8,364,690.28 is: 12,986,878.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,387,595.19 : 8,364,690.28 = 8,364,690.28 : x
  2. Step 2: Convert to fraction form
    5,387,595.19/8,364,690.28 = 8,364,690.28/x
  3. Step 3: Cross multiply
    5,387,595.19x = 8,364,690.28 × 8,364,690.28
  4. Step 4: Simplify right side
    5,387,595.19x = 69,968,043,501,238.20
  5. Step 5: Solve for x
    x = 69,968,043,501,238.20/5,387,595.19
  6. Step 6: Final answer
    x = 12,986,878.39

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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.