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Finding the Fourth Proportional to 462,066.40, 692,354.40 and 261,791.20

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Solution

The fourth proportional to 462,066.40, 692,354.40 and 261,791.20 is: 392,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,066.40 : 692,354.40 = 261,791.20 : x
  2. Step 2: Convert to fraction form
    462,066.40/692,354.40 = 261,791.20/x
  3. Step 3: Cross multiply
    462,066.40x = 692,354.40 × 261,791.20
  4. Step 4: Simplify right side
    462,066.40x = 181,252,289,201.28
  5. Step 5: Solve for x
    x = 181,252,289,201.28/462,066.40
  6. Step 6: Final answer
    x = 392,264.59

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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.