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Finding the Fourth Proportional to 256,305.44, 353,686.86 and 153,056.14

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Solution

The fourth proportional to 256,305.44, 353,686.86 and 153,056.14 is: 211,208.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,305.44 : 353,686.86 = 153,056.14 : x
  2. Step 2: Convert to fraction form
    256,305.44/353,686.86 = 153,056.14/x
  3. Step 3: Cross multiply
    256,305.44x = 353,686.86 × 153,056.14
  4. Step 4: Simplify right side
    256,305.44x = 54,133,945,560.32
  5. Step 5: Solve for x
    x = 54,133,945,560.32/256,305.44
  6. Step 6: Final answer
    x = 211,208.73

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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.