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Finding the Fourth Proportional to 621,514.38, 860,938.18 and 608,917.26

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Solution

The fourth proportional to 621,514.38, 860,938.18 and 608,917.26 is: 843,488.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,514.38 : 860,938.18 = 608,917.26 : x
  2. Step 2: Convert to fraction form
    621,514.38/860,938.18 = 608,917.26/x
  3. Step 3: Cross multiply
    621,514.38x = 860,938.18 × 608,917.26
  4. Step 4: Simplify right side
    621,514.38x = 524,240,114,550.40
  5. Step 5: Solve for x
    x = 524,240,114,550.40/621,514.38
  6. Step 6: Final answer
    x = 843,488.31

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.