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Finding the Fourth Proportional to 128,703.93, 193,081.61 and 44,467.17

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Solution

The fourth proportional to 128,703.93, 193,081.61 and 44,467.17 is: 66,709.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,703.93 : 193,081.61 = 44,467.17 : x
  2. Step 2: Convert to fraction form
    128,703.93/193,081.61 = 44,467.17/x
  3. Step 3: Cross multiply
    128,703.93x = 193,081.61 × 44,467.17
  4. Step 4: Simplify right side
    128,703.93x = 8,585,792,775.74
  5. Step 5: Solve for x
    x = 8,585,792,775.74/128,703.93
  6. Step 6: Final answer
    x = 66,709.64

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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.