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Finding the Fourth Proportional to 693,775.53, 957,336.77 and 387,819.70

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Solution

The fourth proportional to 693,775.53, 957,336.77 and 387,819.70 is: 535,150.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,775.53 : 957,336.77 = 387,819.70 : x
  2. Step 2: Convert to fraction form
    693,775.53/957,336.77 = 387,819.70/x
  3. Step 3: Cross multiply
    693,775.53x = 957,336.77 × 387,819.70
  4. Step 4: Simplify right side
    693,775.53x = 371,274,057,516.58
  5. Step 5: Solve for x
    x = 371,274,057,516.58/693,775.53
  6. Step 6: Final answer
    x = 535,150.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.