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Finding the Fourth Proportional to 411,165.20, 615,826.20 and 245,277.20

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Solution

The fourth proportional to 411,165.20, 615,826.20 and 245,277.20 is: 367,366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,165.20 : 615,826.20 = 245,277.20 : x
  2. Step 2: Convert to fraction form
    411,165.20/615,826.20 = 245,277.20/x
  3. Step 3: Cross multiply
    411,165.20x = 615,826.20 × 245,277.20
  4. Step 4: Simplify right side
    411,165.20x = 151,048,126,022.64
  5. Step 5: Solve for x
    x = 151,048,126,022.64/411,165.20
  6. Step 6: Final answer
    x = 367,366.03

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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.