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Finding the Fourth Proportional to 386,785.94, 533,773.79 and 217,032.62

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Solution

The fourth proportional to 386,785.94, 533,773.79 and 217,032.62 is: 299,510.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,785.94 : 533,773.79 = 217,032.62 : x
  2. Step 2: Convert to fraction form
    386,785.94/533,773.79 = 217,032.62/x
  3. Step 3: Cross multiply
    386,785.94x = 533,773.79 × 217,032.62
  4. Step 4: Simplify right side
    386,785.94x = 115,846,324,131.03
  5. Step 5: Solve for x
    x = 115,846,324,131.03/386,785.94
  6. Step 6: Final answer
    x = 299,510.17

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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.