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Finding the Fourth Proportional to 256,801.05, 354,498.96 and 153,471.72

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Solution

The fourth proportional to 256,801.05, 354,498.96 and 153,471.72 is: 211,858.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,801.05 : 354,498.96 = 153,471.72 : x
  2. Step 2: Convert to fraction form
    256,801.05/354,498.96 = 153,471.72/x
  3. Step 3: Cross multiply
    256,801.05x = 354,498.96 × 153,471.72
  4. Step 4: Simplify right side
    256,801.05x = 54,405,565,129.41
  5. Step 5: Solve for x
    x = 54,405,565,129.41/256,801.05
  6. Step 6: Final answer
    x = 211,858.81

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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.