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Finding the Fourth Proportional to 77,812.52, 116,531.73 and 44,431.47

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Solution

The fourth proportional to 77,812.52, 116,531.73 and 44,431.47 is: 66,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,812.52 : 116,531.73 = 44,431.47 : x
  2. Step 2: Convert to fraction form
    77,812.52/116,531.73 = 44,431.47/x
  3. Step 3: Cross multiply
    77,812.52x = 116,531.73 × 44,431.47
  4. Step 4: Simplify right side
    77,812.52x = 5,177,676,065.54
  5. Step 5: Solve for x
    x = 5,177,676,065.54/77,812.52
  6. Step 6: Final answer
    x = 66,540.40

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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.