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Finding the Fourth Proportional to 68,710.34, 103,060.47 and 21,950.66

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Solution

The fourth proportional to 68,710.34, 103,060.47 and 21,950.66 is: 32,924.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,710.34 : 103,060.47 = 21,950.66 : x
  2. Step 2: Convert to fraction form
    68,710.34/103,060.47 = 21,950.66/x
  3. Step 3: Cross multiply
    68,710.34x = 103,060.47 × 21,950.66
  4. Step 4: Simplify right side
    68,710.34x = 2,262,245,336.41
  5. Step 5: Solve for x
    x = 2,262,245,336.41/68,710.34
  6. Step 6: Final answer
    x = 32,924.38

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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.