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Finding the Fourth Proportional to 139,970.92, 193,132.50 and 82,628.20

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Solution

The fourth proportional to 139,970.92, 193,132.50 and 82,628.20 is: 114,010.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,970.92 : 193,132.50 = 82,628.20 : x
  2. Step 2: Convert to fraction form
    139,970.92/193,132.50 = 82,628.20/x
  3. Step 3: Cross multiply
    139,970.92x = 193,132.50 × 82,628.20
  4. Step 4: Simplify right side
    139,970.92x = 15,958,190,836.50
  5. Step 5: Solve for x
    x = 15,958,190,836.50/139,970.92
  6. Step 6: Final answer
    x = 114,010.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.