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Finding the Fourth Proportional to 256,892.40, 354,505.88 and 140,605.29

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Solution

The fourth proportional to 256,892.40, 354,505.88 and 140,605.29 is: 194,032.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,892.40 : 354,505.88 = 140,605.29 : x
  2. Step 2: Convert to fraction form
    256,892.40/354,505.88 = 140,605.29/x
  3. Step 3: Cross multiply
    256,892.40x = 354,505.88 × 140,605.29
  4. Step 4: Simplify right side
    256,892.40x = 49,845,401,361.08
  5. Step 5: Solve for x
    x = 49,845,401,361.08/256,892.40
  6. Step 6: Final answer
    x = 194,032.21

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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.