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Finding the Fourth Proportional to 223,720.54, 308,735.37 and 128,232.82

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Solution

The fourth proportional to 223,720.54, 308,735.37 and 128,232.82 is: 176,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,720.54 : 308,735.37 = 128,232.82 : x
  2. Step 2: Convert to fraction form
    223,720.54/308,735.37 = 128,232.82/x
  3. Step 3: Cross multiply
    223,720.54x = 308,735.37 × 128,232.82
  4. Step 4: Simplify right side
    223,720.54x = 39,590,007,128.84
  5. Step 5: Solve for x
    x = 39,590,007,128.84/223,720.54
  6. Step 6: Final answer
    x = 176,961.88

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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.