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Finding the Fourth Proportional to 264,628.80, 396,482.40 and 171,086.40

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Solution

The fourth proportional to 264,628.80, 396,482.40 and 171,086.40 is: 256,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,628.80 : 396,482.40 = 171,086.40 : x
  2. Step 2: Convert to fraction form
    264,628.80/396,482.40 = 171,086.40/x
  3. Step 3: Cross multiply
    264,628.80x = 396,482.40 × 171,086.40
  4. Step 4: Simplify right side
    264,628.80x = 67,832,746,479.36
  5. Step 5: Solve for x
    x = 67,832,746,479.36/264,628.80
  6. Step 6: Final answer
    x = 256,331.69

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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.