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Finding the Fourth Proportional to 653,185, 979,839.42 and 253,856.56

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Solution

The fourth proportional to 653,185, 979,839.42 and 253,856.56 is: 380,808.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,185 : 979,839.42 = 253,856.56 : x
  2. Step 2: Convert to fraction form
    653,185/979,839.42 = 253,856.56/x
  3. Step 3: Cross multiply
    653,185x = 979,839.42 × 253,856.56
  4. Step 4: Simplify right side
    653,185x = 248,738,664,513.60
  5. Step 5: Solve for x
    x = 248,738,664,513.60/653,185
  6. Step 6: Final answer
    x = 380,808.90

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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.