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Finding the Fourth Proportional to 1,891,405.63, 2,836,898.19 and 676,933.21

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Solution

The fourth proportional to 1,891,405.63, 2,836,898.19 and 676,933.21 is: 1,015,324.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891,405.63 : 2,836,898.19 = 676,933.21 : x
  2. Step 2: Convert to fraction form
    1,891,405.63/2,836,898.19 = 676,933.21/x
  3. Step 3: Cross multiply
    1,891,405.63x = 2,836,898.19 × 676,933.21
  4. Step 4: Simplify right side
    1,891,405.63x = 1,920,390,598,199.89
  5. Step 5: Solve for x
    x = 1,920,390,598,199.89/1,891,405.63
  6. Step 6: Final answer
    x = 1,015,324.56

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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.