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Finding the Fourth Proportional to 143,571.78, 215,358.48 and 127,849.68

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Solution

The fourth proportional to 143,571.78, 215,358.48 and 127,849.68 is: 191,775.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,571.78 : 215,358.48 = 127,849.68 : x
  2. Step 2: Convert to fraction form
    143,571.78/215,358.48 = 127,849.68/x
  3. Step 3: Cross multiply
    143,571.78x = 215,358.48 × 127,849.68
  4. Step 4: Simplify right side
    143,571.78x = 27,533,512,753.29
  5. Step 5: Solve for x
    x = 27,533,512,753.29/143,571.78
  6. Step 6: Final answer
    x = 191,775.24

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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.