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Finding the Fourth Proportional to 68,373.10, 102,515.10 and 61,374.70

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Solution

The fourth proportional to 68,373.10, 102,515.10 and 61,374.70 is: 92,022.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,373.10 : 102,515.10 = 61,374.70 : x
  2. Step 2: Convert to fraction form
    68,373.10/102,515.10 = 61,374.70/x
  3. Step 3: Cross multiply
    68,373.10x = 102,515.10 × 61,374.70
  4. Step 4: Simplify right side
    68,373.10x = 6,291,833,507.97
  5. Step 5: Solve for x
    x = 6,291,833,507.97/68,373.10
  6. Step 6: Final answer
    x = 92,022.06

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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.