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Finding the Fourth Proportional to 256,783.91, 354,410.44 and 172,048.19

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Solution

The fourth proportional to 256,783.91, 354,410.44 and 172,048.19 is: 237,459.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,783.91 : 354,410.44 = 172,048.19 : x
  2. Step 2: Convert to fraction form
    256,783.91/354,410.44 = 172,048.19/x
  3. Step 3: Cross multiply
    256,783.91x = 354,410.44 × 172,048.19
  4. Step 4: Simplify right side
    256,783.91x = 60,975,672,516.93
  5. Step 5: Solve for x
    x = 60,975,672,516.93/256,783.91
  6. Step 6: Final answer
    x = 237,459.09

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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.