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Finding the Fourth Proportional to 125,847.92, 173,706.72 and 74,896.40

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Solution

The fourth proportional to 125,847.92, 173,706.72 and 74,896.40 is: 103,378.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,847.92 : 173,706.72 = 74,896.40 : x
  2. Step 2: Convert to fraction form
    125,847.92/173,706.72 = 74,896.40/x
  3. Step 3: Cross multiply
    125,847.92x = 173,706.72 × 74,896.40
  4. Step 4: Simplify right side
    125,847.92x = 13,010,007,983.81
  5. Step 5: Solve for x
    x = 13,010,007,983.81/125,847.92
  6. Step 6: Final answer
    x = 103,378.81

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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.