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Finding the Fourth Proportional to 417,790.62, 576,490.23 and 238,908.06

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Solution

The fourth proportional to 417,790.62, 576,490.23 and 238,908.06 is: 329,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,790.62 : 576,490.23 = 238,908.06 : x
  2. Step 2: Convert to fraction form
    417,790.62/576,490.23 = 238,908.06/x
  3. Step 3: Cross multiply
    417,790.62x = 576,490.23 × 238,908.06
  4. Step 4: Simplify right side
    417,790.62x = 137,728,162,458.25
  5. Step 5: Solve for x
    x = 137,728,162,458.25/417,790.62
  6. Step 6: Final answer
    x = 329,658.34

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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.