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Finding the Third Proportional to 51,728,317.88 and 86,210,390.81

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Solution

The third proportional to 51,728,317.88 and 86,210,390.81 is: 143,678,197.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,728,317.88 : 86,210,390.81 = 86,210,390.81 : x
  2. Step 2: Convert to fraction form
    51,728,317.88/86,210,390.81 = 86,210,390.81/x
  3. Step 3: Cross multiply
    51,728,317.88x = 86,210,390.81 × 86,210,390.81
  4. Step 4: Simplify right side
    51,728,317.88x = 7,432,231,484,043,984
  5. Step 5: Solve for x
    x = 7,432,231,484,043,984/51,728,317.88
  6. Step 6: Final answer
    x = 143,678,197.73

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.