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Finding the Fourth Proportional to 481,091.76, 663,907.92 and 266,246.64

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Solution

The fourth proportional to 481,091.76, 663,907.92 and 266,246.64 is: 367,421.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,091.76 : 663,907.92 = 266,246.64 : x
  2. Step 2: Convert to fraction form
    481,091.76/663,907.92 = 266,246.64/x
  3. Step 3: Cross multiply
    481,091.76x = 663,907.92 × 266,246.64
  4. Step 4: Simplify right side
    481,091.76x = 176,763,252,969.39
  5. Step 5: Solve for x
    x = 176,763,252,969.39/481,091.76
  6. Step 6: Final answer
    x = 367,421.08

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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.