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Finding the Fourth Proportional to 527,791.60, 728,334.69 and 312,804.03

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Solution

The fourth proportional to 527,791.60, 728,334.69 and 312,804.03 is: 431,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,791.60 : 728,334.69 = 312,804.03 : x
  2. Step 2: Convert to fraction form
    527,791.60/728,334.69 = 312,804.03/x
  3. Step 3: Cross multiply
    527,791.60x = 728,334.69 × 312,804.03
  4. Step 4: Simplify right side
    527,791.60x = 227,826,025,438.79
  5. Step 5: Solve for x
    x = 227,826,025,438.79/527,791.60
  6. Step 6: Final answer
    x = 431,659.06

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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.