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Finding the Fourth Proportional to 77,663.43, 116,409.87 and 44,310.78

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Solution

The fourth proportional to 77,663.43, 116,409.87 and 44,310.78 is: 66,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,663.43 : 116,409.87 = 44,310.78 : x
  2. Step 2: Convert to fraction form
    77,663.43/116,409.87 = 44,310.78/x
  3. Step 3: Cross multiply
    77,663.43x = 116,409.87 × 44,310.78
  4. Step 4: Simplify right side
    77,663.43x = 5,158,212,139.40
  5. Step 5: Solve for x
    x = 5,158,212,139.40/77,663.43
  6. Step 6: Final answer
    x = 66,417.52

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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.