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Finding the Fourth Proportional to 619,856.37, 855,336.06 and 347,954.22

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Solution

The fourth proportional to 619,856.37, 855,336.06 and 347,954.22 is: 480,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,856.37 : 855,336.06 = 347,954.22 : x
  2. Step 2: Convert to fraction form
    619,856.37/855,336.06 = 347,954.22/x
  3. Step 3: Cross multiply
    619,856.37x = 855,336.06 × 347,954.22
  4. Step 4: Simplify right side
    619,856.37x = 297,617,791,595.17
  5. Step 5: Solve for x
    x = 297,617,791,595.17/619,856.37
  6. Step 6: Final answer
    x = 480,139.93

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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.