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Finding the Fourth Proportional to 127,212.16, 190,822.32 and 63,997.78

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Solution

The fourth proportional to 127,212.16, 190,822.32 and 63,997.78 is: 95,998.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,212.16 : 190,822.32 = 63,997.78 : x
  2. Step 2: Convert to fraction form
    127,212.16/190,822.32 = 63,997.78/x
  3. Step 3: Cross multiply
    127,212.16x = 190,822.32 × 63,997.78
  4. Step 4: Simplify right side
    127,212.16x = 12,212,204,854.45
  5. Step 5: Solve for x
    x = 12,212,204,854.45/127,212.16
  6. Step 6: Final answer
    x = 95,998.72

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1.5x scale

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.