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Finding the Fourth Proportional to 317,392.32, 437,993.64 and 177,689.20

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Solution

The fourth proportional to 317,392.32, 437,993.64 and 177,689.20 is: 245,206.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,392.32 : 437,993.64 = 177,689.20 : x
  2. Step 2: Convert to fraction form
    317,392.32/437,993.64 = 177,689.20/x
  3. Step 3: Cross multiply
    317,392.32x = 437,993.64 × 177,689.20
  4. Step 4: Simplify right side
    317,392.32x = 77,826,739,496.69
  5. Step 5: Solve for x
    x = 77,826,739,496.69/317,392.32
  6. Step 6: Final answer
    x = 245,206.75

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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.