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Finding the Fourth Proportional to 56,907.99, 85,340.12 and 39,324.51

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Solution

The fourth proportional to 56,907.99, 85,340.12 and 39,324.51 is: 58,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,907.99 : 85,340.12 = 39,324.51 : x
  2. Step 2: Convert to fraction form
    56,907.99/85,340.12 = 39,324.51/x
  3. Step 3: Cross multiply
    56,907.99x = 85,340.12 × 39,324.51
  4. Step 4: Simplify right side
    56,907.99x = 3,355,958,205.72
  5. Step 5: Solve for x
    x = 3,355,958,205.72/56,907.99
  6. Step 6: Final answer
    x = 58,971.65

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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.