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Finding the Fourth Proportional to 303,378.60, 418,745.73 and 176,095.20

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Solution

The fourth proportional to 303,378.60, 418,745.73 and 176,095.20 is: 243,059.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,378.60 : 418,745.73 = 176,095.20 : x
  2. Step 2: Convert to fraction form
    303,378.60/418,745.73 = 176,095.20/x
  3. Step 3: Cross multiply
    303,378.60x = 418,745.73 × 176,095.20
  4. Step 4: Simplify right side
    303,378.60x = 73,739,113,073.50
  5. Step 5: Solve for x
    x = 73,739,113,073.50/303,378.60
  6. Step 6: Final answer
    x = 243,059.71

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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.