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Finding the Fourth Proportional to 625,573.87, 864,009.38 and 411,668.87

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Solution

The fourth proportional to 625,573.87, 864,009.38 and 411,668.87 is: 568,575.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,573.87 : 864,009.38 = 411,668.87 : x
  2. Step 2: Convert to fraction form
    625,573.87/864,009.38 = 411,668.87/x
  3. Step 3: Cross multiply
    625,573.87x = 864,009.38 × 411,668.87
  4. Step 4: Simplify right side
    625,573.87x = 355,685,761,843.13
  5. Step 5: Solve for x
    x = 355,685,761,843.13/625,573.87
  6. Step 6: Final answer
    x = 568,575.16

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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.