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Finding the Fourth Proportional to 352,562.32, 529,053.60 and 127,940.28

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Solution

The fourth proportional to 352,562.32, 529,053.60 and 127,940.28 is: 191,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,562.32 : 529,053.60 = 127,940.28 : x
  2. Step 2: Convert to fraction form
    352,562.32/529,053.60 = 127,940.28/x
  3. Step 3: Cross multiply
    352,562.32x = 529,053.60 × 127,940.28
  4. Step 4: Simplify right side
    352,562.32x = 67,687,265,719.01
  5. Step 5: Solve for x
    x = 67,687,265,719.01/352,562.32
  6. Step 6: Final answer
    x = 191,986.67

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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.