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Finding the Fourth Proportional to 842,920.62, 1,163,236.62 and 475,402.56

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Solution

The fourth proportional to 842,920.62, 1,163,236.62 and 475,402.56 is: 656,059.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,920.62 : 1,163,236.62 = 475,402.56 : x
  2. Step 2: Convert to fraction form
    842,920.62/1,163,236.62 = 475,402.56/x
  3. Step 3: Cross multiply
    842,920.62x = 1,163,236.62 × 475,402.56
  4. Step 4: Simplify right side
    842,920.62x = 553,005,667,033.75
  5. Step 5: Solve for x
    x = 553,005,667,033.75/842,920.62
  6. Step 6: Final answer
    x = 656,059.01

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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.