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Finding the Fourth Proportional to 199,110.80, 298,228.80 and 172,866.80

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Solution

The fourth proportional to 199,110.80, 298,228.80 and 172,866.80 is: 258,920.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,110.80 : 298,228.80 = 172,866.80 : x
  2. Step 2: Convert to fraction form
    199,110.80/298,228.80 = 172,866.80/x
  3. Step 3: Cross multiply
    199,110.80x = 298,228.80 × 172,866.80
  4. Step 4: Simplify right side
    199,110.80x = 51,553,858,323.84
  5. Step 5: Solve for x
    x = 51,553,858,323.84/199,110.80
  6. Step 6: Final answer
    x = 258,920.45

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1.5x scale

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.