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Finding the Fourth Proportional to 34,782.68, 48,007.68 and 21,360.98

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Solution

The fourth proportional to 34,782.68, 48,007.68 and 21,360.98 is: 29,482.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,782.68 : 48,007.68 = 21,360.98 : x
  2. Step 2: Convert to fraction form
    34,782.68/48,007.68 = 21,360.98/x
  3. Step 3: Cross multiply
    34,782.68x = 48,007.68 × 21,360.98
  4. Step 4: Simplify right side
    34,782.68x = 1,025,491,092.33
  5. Step 5: Solve for x
    x = 1,025,491,092.33/34,782.68
  6. Step 6: Final answer
    x = 29,482.81

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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.