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Finding the Fourth Proportional to 668,856, 922,719.84 and 396,935.34

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Solution

The fourth proportional to 668,856, 922,719.84 and 396,935.34 is: 547,591.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,856 : 922,719.84 = 396,935.34 : x
  2. Step 2: Convert to fraction form
    668,856/922,719.84 = 396,935.34/x
  3. Step 3: Cross multiply
    668,856x = 922,719.84 × 396,935.34
  4. Step 4: Simplify right side
    668,856x = 366,260,113,415.15
  5. Step 5: Solve for x
    x = 366,260,113,415.15/668,856
  6. Step 6: Final answer
    x = 547,591.88

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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.