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Finding the Fourth Proportional to 256,364.76, 353,796.90 and 154,422.24

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Solution

The fourth proportional to 256,364.76, 353,796.90 and 154,422.24 is: 213,110.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,364.76 : 353,796.90 = 154,422.24 : x
  2. Step 2: Convert to fraction form
    256,364.76/353,796.90 = 154,422.24/x
  3. Step 3: Cross multiply
    256,364.76x = 353,796.90 × 154,422.24
  4. Step 4: Simplify right side
    256,364.76x = 54,634,109,803.06
  5. Step 5: Solve for x
    x = 54,634,109,803.06/256,364.76
  6. Step 6: Final answer
    x = 213,110.84

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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.