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Finding the Fourth Proportional to 528,206.80, 792,310.20 and 173,135.20

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Solution

The fourth proportional to 528,206.80, 792,310.20 and 173,135.20 is: 259,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,206.80 : 792,310.20 = 173,135.20 : x
  2. Step 2: Convert to fraction form
    528,206.80/792,310.20 = 173,135.20/x
  3. Step 3: Cross multiply
    528,206.80x = 792,310.20 × 173,135.20
  4. Step 4: Simplify right side
    528,206.80x = 137,176,784,939.04
  5. Step 5: Solve for x
    x = 137,176,784,939.04/528,206.80
  6. Step 6: Final answer
    x = 259,702.80

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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.