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Finding the Third Proportional to 1,478,429.09 and 3,177,728.09

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Solution

The third proportional to 1,478,429.09 and 3,177,728.09 is: 6,830,192.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478,429.09 : 3,177,728.09 = 3,177,728.09 : x
  2. Step 2: Convert to fraction form
    1,478,429.09/3,177,728.09 = 3,177,728.09/x
  3. Step 3: Cross multiply
    1,478,429.09x = 3,177,728.09 × 3,177,728.09
  4. Step 4: Simplify right side
    1,478,429.09x = 10,097,955,788,156.01
  5. Step 5: Solve for x
    x = 10,097,955,788,156.01/1,478,429.09
  6. Step 6: Final answer
    x = 6,830,192.86

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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.