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Finding the Fourth Proportional to 351,309.26, 526,962.68 and 85,069.56

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Solution

The fourth proportional to 351,309.26, 526,962.68 and 85,069.56 is: 127,604.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,309.26 : 526,962.68 = 85,069.56 : x
  2. Step 2: Convert to fraction form
    351,309.26/526,962.68 = 85,069.56/x
  3. Step 3: Cross multiply
    351,309.26x = 526,962.68 × 85,069.56
  4. Step 4: Simplify right side
    351,309.26x = 44,828,483,324.02
  5. Step 5: Solve for x
    x = 44,828,483,324.02/351,309.26
  6. Step 6: Final answer
    x = 127,604.05

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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.