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Finding the Fourth Proportional to 3,421,253.92, 4,721,478.60 and 1,893,361.54

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Solution

The fourth proportional to 3,421,253.92, 4,721,478.60 and 1,893,361.54 is: 2,612,920.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421,253.92 : 4,721,478.60 = 1,893,361.54 : x
  2. Step 2: Convert to fraction form
    3,421,253.92/4,721,478.60 = 1,893,361.54/x
  3. Step 3: Cross multiply
    3,421,253.92x = 4,721,478.60 × 1,893,361.54
  4. Step 4: Simplify right side
    3,421,253.92x = 8,939,465,993,173.04
  5. Step 5: Solve for x
    x = 8,939,465,993,173.04/3,421,253.92
  6. Step 6: Final answer
    x = 2,612,920.94

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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.