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Finding the Fourth Proportional to 256,783.29, 354,358.47 and 143,606.04

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Solution

The fourth proportional to 256,783.29, 354,358.47 and 143,606.04 is: 198,174.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,783.29 : 354,358.47 = 143,606.04 : x
  2. Step 2: Convert to fraction form
    256,783.29/354,358.47 = 143,606.04/x
  3. Step 3: Cross multiply
    256,783.29x = 354,358.47 × 143,606.04
  4. Step 4: Simplify right side
    256,783.29x = 50,888,016,617.16
  5. Step 5: Solve for x
    x = 50,888,016,617.16/256,783.29
  6. Step 6: Final answer
    x = 198,174.95

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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.