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Finding the Fourth Proportional to 419,587.98, 579,072.96 and 256,235.28

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Solution

The fourth proportional to 419,587.98, 579,072.96 and 256,235.28 is: 353,630.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,587.98 : 579,072.96 = 256,235.28 : x
  2. Step 2: Convert to fraction form
    419,587.98/579,072.96 = 256,235.28/x
  3. Step 3: Cross multiply
    419,587.98x = 579,072.96 × 256,235.28
  4. Step 4: Simplify right side
    419,587.98x = 148,378,922,046.03
  5. Step 5: Solve for x
    x = 148,378,922,046.03/419,587.98
  6. Step 6: Final answer
    x = 353,630.06

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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.