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Finding the Fourth Proportional to 708,255.12, 977,367.24 and 385,958.64

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Solution

The fourth proportional to 708,255.12, 977,367.24 and 385,958.64 is: 532,609.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,255.12 : 977,367.24 = 385,958.64 : x
  2. Step 2: Convert to fraction form
    708,255.12/977,367.24 = 385,958.64/x
  3. Step 3: Cross multiply
    708,255.12x = 977,367.24 × 385,958.64
  4. Step 4: Simplify right side
    708,255.12x = 377,223,330,730.95
  5. Step 5: Solve for x
    x = 377,223,330,730.95/708,255.12
  6. Step 6: Final answer
    x = 532,609.39

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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.