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Finding the Fourth Proportional to 635,415.63, 876,873.56 and 348,940.50

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Solution

The fourth proportional to 635,415.63, 876,873.56 and 348,940.50 is: 481,537.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,415.63 : 876,873.56 = 348,940.50 : x
  2. Step 2: Convert to fraction form
    635,415.63/876,873.56 = 348,940.50/x
  3. Step 3: Cross multiply
    635,415.63x = 876,873.56 × 348,940.50
  4. Step 4: Simplify right side
    635,415.63x = 305,976,698,463.18
  5. Step 5: Solve for x
    x = 305,976,698,463.18/635,415.63
  6. Step 6: Final answer
    x = 481,537.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.