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Finding the Fourth Proportional to 256,423.83, 353,877.12 and 154,480.94

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Solution

The fourth proportional to 256,423.83, 353,877.12 and 154,480.94 is: 213,191.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,423.83 : 353,877.12 = 154,480.94 : x
  2. Step 2: Convert to fraction form
    256,423.83/353,877.12 = 154,480.94/x
  3. Step 3: Cross multiply
    256,423.83x = 353,877.12 × 154,480.94
  4. Step 4: Simplify right side
    256,423.83x = 54,667,268,372.71
  5. Step 5: Solve for x
    x = 54,667,268,372.71/256,423.83
  6. Step 6: Final answer
    x = 213,191.06

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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.