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Finding the Fourth Proportional to 919,730.96, 1,269,215.72 and 517,322

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Solution

The fourth proportional to 919,730.96, 1,269,215.72 and 517,322 is: 713,897.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,730.96 : 1,269,215.72 = 517,322 : x
  2. Step 2: Convert to fraction form
    919,730.96/1,269,215.72 = 517,322/x
  3. Step 3: Cross multiply
    919,730.96x = 1,269,215.72 × 517,322
  4. Step 4: Simplify right side
    919,730.96x = 656,593,214,701.84
  5. Step 5: Solve for x
    x = 656,593,214,701.84/919,730.96
  6. Step 6: Final answer
    x = 713,897.05

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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.