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Finding the Fourth Proportional to 568,072.80, 852,109.20 and 358,639.20

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Solution

The fourth proportional to 568,072.80, 852,109.20 and 358,639.20 is: 537,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,072.80 : 852,109.20 = 358,639.20 : x
  2. Step 2: Convert to fraction form
    568,072.80/852,109.20 = 358,639.20/x
  3. Step 3: Cross multiply
    568,072.80x = 852,109.20 × 358,639.20
  4. Step 4: Simplify right side
    568,072.80x = 305,599,761,800.64
  5. Step 5: Solve for x
    x = 305,599,761,800.64/568,072.80
  6. Step 6: Final answer
    x = 537,958.80

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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.