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Finding the Fourth Proportional to 693,639, 957,299.58 and 391,852.44

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Solution

The fourth proportional to 693,639, 957,299.58 and 391,852.44 is: 540,800.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,639 : 957,299.58 = 391,852.44 : x
  2. Step 2: Convert to fraction form
    693,639/957,299.58 = 391,852.44/x
  3. Step 3: Cross multiply
    693,639x = 957,299.58 × 391,852.44
  4. Step 4: Simplify right side
    693,639x = 375,120,176,233.98
  5. Step 5: Solve for x
    x = 375,120,176,233.98/693,639
  6. Step 6: Final answer
    x = 540,800.30

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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.