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Finding the Fourth Proportional to 401,030.58, 553,385.38 and 231,231.90

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Solution

The fourth proportional to 401,030.58, 553,385.38 and 231,231.90 is: 319,078.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,030.58 : 553,385.38 = 231,231.90 : x
  2. Step 2: Convert to fraction form
    401,030.58/553,385.38 = 231,231.90/x
  3. Step 3: Cross multiply
    401,030.58x = 553,385.38 × 231,231.90
  4. Step 4: Simplify right side
    401,030.58x = 127,960,352,849.62
  5. Step 5: Solve for x
    x = 127,960,352,849.62/401,030.58
  6. Step 6: Final answer
    x = 319,078.79

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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.