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Finding the Fourth Proportional to 620,178.52, 928,911.48 and 439,716.93

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Solution

The fourth proportional to 620,178.52, 928,911.48 and 439,716.93 is: 658,613.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,178.52 : 928,911.48 = 439,716.93 : x
  2. Step 2: Convert to fraction form
    620,178.52/928,911.48 = 439,716.93/x
  3. Step 3: Cross multiply
    620,178.52x = 928,911.48 × 439,716.93
  4. Step 4: Simplify right side
    620,178.52x = 408,458,104,227.36
  5. Step 5: Solve for x
    x = 408,458,104,227.36/620,178.52
  6. Step 6: Final answer
    x = 658,613.76

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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.