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Finding the Fourth Proportional to 256,300.70, 384,451.05 and 181,505.30

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Solution

The fourth proportional to 256,300.70, 384,451.05 and 181,505.30 is: 272,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,300.70 : 384,451.05 = 181,505.30 : x
  2. Step 2: Convert to fraction form
    256,300.70/384,451.05 = 181,505.30/x
  3. Step 3: Cross multiply
    256,300.70x = 384,451.05 × 181,505.30
  4. Step 4: Simplify right side
    256,300.70x = 69,779,903,165.57
  5. Step 5: Solve for x
    x = 69,779,903,165.57/256,300.70
  6. Step 6: Final answer
    x = 272,257.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.