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Finding the Fourth Proportional to 256,576.70, 354,093.18 and 149,146.40

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Solution

The fourth proportional to 256,576.70, 354,093.18 and 149,146.40 is: 205,832.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,576.70 : 354,093.18 = 149,146.40 : x
  2. Step 2: Convert to fraction form
    256,576.70/354,093.18 = 149,146.40/x
  3. Step 3: Cross multiply
    256,576.70x = 354,093.18 × 149,146.40
  4. Step 4: Simplify right side
    256,576.70x = 52,811,723,061.55
  5. Step 5: Solve for x
    x = 52,811,723,061.55/256,576.70
  6. Step 6: Final answer
    x = 205,832.11

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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.