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Finding the Fourth Proportional to 70,499.73, 105,541.83 and 61,751.73

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Solution

The fourth proportional to 70,499.73, 105,541.83 and 61,751.73 is: 92,445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,499.73 : 105,541.83 = 61,751.73 : x
  2. Step 2: Convert to fraction form
    70,499.73/105,541.83 = 61,751.73/x
  3. Step 3: Cross multiply
    70,499.73x = 105,541.83 × 61,751.73
  4. Step 4: Simplify right side
    70,499.73x = 6,517,390,589.87
  5. Step 5: Solve for x
    x = 6,517,390,589.87/70,499.73
  6. Step 6: Final answer
    x = 92,445.61

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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.