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Finding the Fourth Proportional to 334,553.80, 501,664.65 and 121,313.20

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Solution

The fourth proportional to 334,553.80, 501,664.65 and 121,313.20 is: 181,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,553.80 : 501,664.65 = 121,313.20 : x
  2. Step 2: Convert to fraction form
    334,553.80/501,664.65 = 121,313.20/x
  3. Step 3: Cross multiply
    334,553.80x = 501,664.65 × 121,313.20
  4. Step 4: Simplify right side
    334,553.80x = 60,858,544,018.38
  5. Step 5: Solve for x
    x = 60,858,544,018.38/334,553.80
  6. Step 6: Final answer
    x = 181,909.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.