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Finding the Third Proportional to 1,387,798.31 and 2,177,538.19

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Solution

The third proportional to 1,387,798.31 and 2,177,538.19 is: 3,416,687.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,798.31 : 2,177,538.19 = 2,177,538.19 : x
  2. Step 2: Convert to fraction form
    1,387,798.31/2,177,538.19 = 2,177,538.19/x
  3. Step 3: Cross multiply
    1,387,798.31x = 2,177,538.19 × 2,177,538.19
  4. Step 4: Simplify right side
    1,387,798.31x = 4,741,672,558,020.79
  5. Step 5: Solve for x
    x = 4,741,672,558,020.79/1,387,798.31
  6. Step 6: Final answer
    x = 3,416,687.08

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.