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Finding the Fourth Proportional to 921,481.92, 1,381,652.64 and 359,856

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Solution

The fourth proportional to 921,481.92, 1,381,652.64 and 359,856 is: 539,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,481.92 : 1,381,652.64 = 359,856 : x
  2. Step 2: Convert to fraction form
    921,481.92/1,381,652.64 = 359,856/x
  3. Step 3: Cross multiply
    921,481.92x = 1,381,652.64 × 359,856
  4. Step 4: Simplify right side
    921,481.92x = 497,195,992,419.84
  5. Step 5: Solve for x
    x = 497,195,992,419.84/921,481.92
  6. Step 6: Final answer
    x = 539,561.31

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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.