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Finding the Fourth Proportional to 352,399.68, 528,481.05 and 127,713.07

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Solution

The fourth proportional to 352,399.68, 528,481.05 and 127,713.07 is: 191,526.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,399.68 : 528,481.05 = 127,713.07 : x
  2. Step 2: Convert to fraction form
    352,399.68/528,481.05 = 127,713.07/x
  3. Step 3: Cross multiply
    352,399.68x = 528,481.05 × 127,713.07
  4. Step 4: Simplify right side
    352,399.68x = 67,493,935,532.20
  5. Step 5: Solve for x
    x = 67,493,935,532.20/352,399.68
  6. Step 6: Final answer
    x = 191,526.67

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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.