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Finding the Fourth Proportional to 571,930.12, 789,236.81 and 313,801.24

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Solution

The fourth proportional to 571,930.12, 789,236.81 and 313,801.24 is: 433,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,930.12 : 789,236.81 = 313,801.24 : x
  2. Step 2: Convert to fraction form
    571,930.12/789,236.81 = 313,801.24/x
  3. Step 3: Cross multiply
    571,930.12x = 789,236.81 × 313,801.24
  4. Step 4: Simplify right side
    571,930.12x = 247,663,490,511.25
  5. Step 5: Solve for x
    x = 247,663,490,511.25/571,930.12
  6. Step 6: Final answer
    x = 433,031.04

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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.