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Finding the Fourth Proportional to 406,574.64, 561,081.11 and 236,819.70

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Solution

The fourth proportional to 406,574.64, 561,081.11 and 236,819.70 is: 326,815.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,574.64 : 561,081.11 = 236,819.70 : x
  2. Step 2: Convert to fraction form
    406,574.64/561,081.11 = 236,819.70/x
  3. Step 3: Cross multiply
    406,574.64x = 561,081.11 × 236,819.70
  4. Step 4: Simplify right side
    406,574.64x = 132,875,060,145.87
  5. Step 5: Solve for x
    x = 132,875,060,145.87/406,574.64
  6. Step 6: Final answer
    x = 326,815.91

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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.