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Finding the Fourth Proportional to 115,755.36, 173,639.76 and 44,678.40

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Solution

The fourth proportional to 115,755.36, 173,639.76 and 44,678.40 is: 67,020.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,755.36 : 173,639.76 = 44,678.40 : x
  2. Step 2: Convert to fraction form
    115,755.36/173,639.76 = 44,678.40/x
  3. Step 3: Cross multiply
    115,755.36x = 173,639.76 × 44,678.40
  4. Step 4: Simplify right side
    115,755.36x = 7,757,946,653.18
  5. Step 5: Solve for x
    x = 7,757,946,653.18/115,755.36
  6. Step 6: Final answer
    x = 67,020.19

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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.