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Finding the Fourth Proportional to 574,726.45, 860,613.45 and 455,644.30

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Solution

The fourth proportional to 574,726.45, 860,613.45 and 455,644.30 is: 682,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,726.45 : 860,613.45 = 455,644.30 : x
  2. Step 2: Convert to fraction form
    574,726.45/860,613.45 = 455,644.30/x
  3. Step 3: Cross multiply
    574,726.45x = 860,613.45 × 455,644.30
  4. Step 4: Simplify right side
    574,726.45x = 392,133,612,995.84
  5. Step 5: Solve for x
    x = 392,133,612,995.84/574,726.45
  6. Step 6: Final answer
    x = 682,296.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.