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Finding the Fourth Proportional to 265,939.20, 398,252.70 and 176,709.60

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Solution

The fourth proportional to 265,939.20, 398,252.70 and 176,709.60 is: 264,628.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,939.20 : 398,252.70 = 176,709.60 : x
  2. Step 2: Convert to fraction form
    265,939.20/398,252.70 = 176,709.60/x
  3. Step 3: Cross multiply
    265,939.20x = 398,252.70 × 176,709.60
  4. Step 4: Simplify right side
    265,939.20x = 70,375,075,315.92
  5. Step 5: Solve for x
    x = 70,375,075,315.92/265,939.20
  6. Step 6: Final answer
    x = 264,628.44

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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.