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Finding the Fourth Proportional to 561,083.60, 839,551.80 and 511,317.20

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Solution

The fourth proportional to 561,083.60, 839,551.80 and 511,317.20 is: 765,086.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,083.60 : 839,551.80 = 511,317.20 : x
  2. Step 2: Convert to fraction form
    561,083.60/839,551.80 = 511,317.20/x
  3. Step 3: Cross multiply
    561,083.60x = 839,551.80 × 511,317.20
  4. Step 4: Simplify right side
    561,083.60x = 429,277,275,630.96
  5. Step 5: Solve for x
    x = 429,277,275,630.96/561,083.60
  6. Step 6: Final answer
    x = 765,086.12

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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.