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Finding the Fourth Proportional to 571,395.77, 857,100.94 and 393,855.11

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Solution

The fourth proportional to 571,395.77, 857,100.94 and 393,855.11 is: 590,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,395.77 : 857,100.94 = 393,855.11 : x
  2. Step 2: Convert to fraction form
    571,395.77/857,100.94 = 393,855.11/x
  3. Step 3: Cross multiply
    571,395.77x = 857,100.94 × 393,855.11
  4. Step 4: Simplify right side
    571,395.77x = 337,573,585,164.22
  5. Step 5: Solve for x
    x = 337,573,585,164.22/571,395.77
  6. Step 6: Final answer
    x = 590,787.69

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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.