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Finding the Fourth Proportional to 219,029.20, 328,543.80 and 219,029.20

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Solution

The fourth proportional to 219,029.20, 328,543.80 and 219,029.20 is: 328,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,029.20 : 328,543.80 = 219,029.20 : x
  2. Step 2: Convert to fraction form
    219,029.20/328,543.80 = 219,029.20/x
  3. Step 3: Cross multiply
    219,029.20x = 328,543.80 × 219,029.20
  4. Step 4: Simplify right side
    219,029.20x = 71,960,685,678.96
  5. Step 5: Solve for x
    x = 71,960,685,678.96/219,029.20
  6. Step 6: Final answer
    x = 328,543.80

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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.