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Finding the Fourth Proportional to 403,212.80, 604,819.20 and 166,725.20

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Solution

The fourth proportional to 403,212.80, 604,819.20 and 166,725.20 is: 250,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,212.80 : 604,819.20 = 166,725.20 : x
  2. Step 2: Convert to fraction form
    403,212.80/604,819.20 = 166,725.20/x
  3. Step 3: Cross multiply
    403,212.80x = 604,819.20 × 166,725.20
  4. Step 4: Simplify right side
    403,212.80x = 100,838,602,083.84
  5. Step 5: Solve for x
    x = 100,838,602,083.84/403,212.80
  6. Step 6: Final answer
    x = 250,087.80

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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.