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Finding the Third Proportional to 272,880.56 and 390,752.44

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Solution

The third proportional to 272,880.56 and 390,752.44 is: 559,539.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,880.56 : 390,752.44 = 390,752.44 : x
  2. Step 2: Convert to fraction form
    272,880.56/390,752.44 = 390,752.44/x
  3. Step 3: Cross multiply
    272,880.56x = 390,752.44 × 390,752.44
  4. Step 4: Simplify right side
    272,880.56x = 152,687,467,412.19
  5. Step 5: Solve for x
    x = 152,687,467,412.19/272,880.56
  6. Step 6: Final answer
    x = 559,539.55

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.