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Finding the Fourth Proportional to 104,803.11, 144,631.32 and 57,057.27

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Solution

The fourth proportional to 104,803.11, 144,631.32 and 57,057.27 is: 78,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,803.11 : 144,631.32 = 57,057.27 : x
  2. Step 2: Convert to fraction form
    104,803.11/144,631.32 = 57,057.27/x
  3. Step 3: Cross multiply
    104,803.11x = 144,631.32 × 57,057.27
  4. Step 4: Simplify right side
    104,803.11x = 8,252,268,275.70
  5. Step 5: Solve for x
    x = 8,252,268,275.70/104,803.11
  6. Step 6: Final answer
    x = 78,740.68

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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.