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Finding the Fourth Proportional to 221,608.32, 331,882.68 and 127,829.76

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Solution

The fourth proportional to 221,608.32, 331,882.68 and 127,829.76 is: 191,439.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,608.32 : 331,882.68 = 127,829.76 : x
  2. Step 2: Convert to fraction form
    221,608.32/331,882.68 = 127,829.76/x
  3. Step 3: Cross multiply
    221,608.32x = 331,882.68 × 127,829.76
  4. Step 4: Simplify right side
    221,608.32x = 42,424,483,332.56
  5. Step 5: Solve for x
    x = 42,424,483,332.56/221,608.32
  6. Step 6: Final answer
    x = 191,439.04

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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.