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Finding the Third Proportional to 4,569,889.78 and 9,926,451.56

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Solution

The third proportional to 4,569,889.78 and 9,926,451.56 is: 21,561,666.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,569,889.78 : 9,926,451.56 = 9,926,451.56 : x
  2. Step 2: Convert to fraction form
    4,569,889.78/9,926,451.56 = 9,926,451.56/x
  3. Step 3: Cross multiply
    4,569,889.78x = 9,926,451.56 × 9,926,451.56
  4. Step 4: Simplify right side
    4,569,889.78x = 98,534,440,622,658.69
  5. Step 5: Solve for x
    x = 98,534,440,622,658.69/4,569,889.78
  6. Step 6: Final answer
    x = 21,561,666.77

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.