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Finding the Fourth Proportional to 638,714.28, 881,396.06 and 366,590.66

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Solution

The fourth proportional to 638,714.28, 881,396.06 and 366,590.66 is: 505,878.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,714.28 : 881,396.06 = 366,590.66 : x
  2. Step 2: Convert to fraction form
    638,714.28/881,396.06 = 366,590.66/x
  3. Step 3: Cross multiply
    638,714.28x = 881,396.06 × 366,590.66
  4. Step 4: Simplify right side
    638,714.28x = 323,111,557,116.87
  5. Step 5: Solve for x
    x = 323,111,557,116.87/638,714.28
  6. Step 6: Final answer
    x = 505,878.09

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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.