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Finding the Fourth Proportional to 68,373.21, 102,596.65 and 33,312.87

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Solution

The fourth proportional to 68,373.21, 102,596.65 and 33,312.87 is: 49,987.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,373.21 : 102,596.65 = 33,312.87 : x
  2. Step 2: Convert to fraction form
    68,373.21/102,596.65 = 33,312.87/x
  3. Step 3: Cross multiply
    68,373.21x = 102,596.65 × 33,312.87
  4. Step 4: Simplify right side
    68,373.21x = 3,417,788,863.89
  5. Step 5: Solve for x
    x = 3,417,788,863.89/68,373.21
  6. Step 6: Final answer
    x = 49,987.25

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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.