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Finding the Fourth Proportional to 445,710.78, 615,077.30 and 241,761.20

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Solution

The fourth proportional to 445,710.78, 615,077.30 and 241,761.20 is: 333,628.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,710.78 : 615,077.30 = 241,761.20 : x
  2. Step 2: Convert to fraction form
    445,710.78/615,077.30 = 241,761.20/x
  3. Step 3: Cross multiply
    445,710.78x = 615,077.30 × 241,761.20
  4. Step 4: Simplify right side
    445,710.78x = 148,701,821,856.57
  5. Step 5: Solve for x
    x = 148,701,821,856.57/445,710.78
  6. Step 6: Final answer
    x = 333,628.51

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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.