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Finding the Fourth Proportional to 404,977, 558,868.28 and 226,129

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Solution

The fourth proportional to 404,977, 558,868.28 and 226,129 is: 312,058.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,977 : 558,868.28 = 226,129 : x
  2. Step 2: Convert to fraction form
    404,977/558,868.28 = 226,129/x
  3. Step 3: Cross multiply
    404,977x = 558,868.28 × 226,129
  4. Step 4: Simplify right side
    404,977x = 126,376,325,288.12
  5. Step 5: Solve for x
    x = 126,376,325,288.12/404,977
  6. Step 6: Final answer
    x = 312,058.03

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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.