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Finding the Fourth Proportional to 334,086.10, 501,129.15 and 156,939.10

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Solution

The fourth proportional to 334,086.10, 501,129.15 and 156,939.10 is: 235,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,086.10 : 501,129.15 = 156,939.10 : x
  2. Step 2: Convert to fraction form
    334,086.10/501,129.15 = 156,939.10/x
  3. Step 3: Cross multiply
    334,086.10x = 501,129.15 × 156,939.10
  4. Step 4: Simplify right side
    334,086.10x = 78,646,757,784.77
  5. Step 5: Solve for x
    x = 78,646,757,784.77/334,086.10
  6. Step 6: Final answer
    x = 235,408.65

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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.