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Finding the Fourth Proportional to 127,777.15, 176,212.87 and 100,983.67

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Solution

The fourth proportional to 127,777.15, 176,212.87 and 100,983.67 is: 139,262.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,777.15 : 176,212.87 = 100,983.67 : x
  2. Step 2: Convert to fraction form
    127,777.15/176,212.87 = 100,983.67/x
  3. Step 3: Cross multiply
    127,777.15x = 176,212.87 × 100,983.67
  4. Step 4: Simplify right side
    127,777.15x = 17,794,621,620.84
  5. Step 5: Solve for x
    x = 17,794,621,620.84/127,777.15
  6. Step 6: Final answer
    x = 139,262.94

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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.