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Finding the Third Proportional to 289,548 and 436,448.25

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Solution

The third proportional to 289,548 and 436,448.25 is: 657,877.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,548 : 436,448.25 = 436,448.25 : x
  2. Step 2: Convert to fraction form
    289,548/436,448.25 = 436,448.25/x
  3. Step 3: Cross multiply
    289,548x = 436,448.25 × 436,448.25
  4. Step 4: Simplify right side
    289,548x = 190,487,074,928.06
  5. Step 5: Solve for x
    x = 190,487,074,928.06/289,548
  6. Step 6: Final answer
    x = 657,877.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.