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Finding the Fourth Proportional to 622,763.60, 859,574.08 and 405,514.52

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Solution

The fourth proportional to 622,763.60, 859,574.08 and 405,514.52 is: 559,714.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,763.60 : 859,574.08 = 405,514.52 : x
  2. Step 2: Convert to fraction form
    622,763.60/859,574.08 = 405,514.52/x
  3. Step 3: Cross multiply
    622,763.60x = 859,574.08 × 405,514.52
  4. Step 4: Simplify right side
    622,763.60x = 348,569,770,455.64
  5. Step 5: Solve for x
    x = 348,569,770,455.64/622,763.60
  6. Step 6: Final answer
    x = 559,714.43

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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.