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Finding the Fourth Proportional to 1,836,600.60, 2,754,900.90 and 1,328,779.20

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Solution

The fourth proportional to 1,836,600.60, 2,754,900.90 and 1,328,779.20 is: 1,993,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836,600.60 : 2,754,900.90 = 1,328,779.20 : x
  2. Step 2: Convert to fraction form
    1,836,600.60/2,754,900.90 = 1,328,779.20/x
  3. Step 3: Cross multiply
    1,836,600.60x = 2,754,900.90 × 1,328,779.20
  4. Step 4: Simplify right side
    1,836,600.60x = 3,660,655,013,981.28
  5. Step 5: Solve for x
    x = 3,660,655,013,981.28/1,836,600.60
  6. Step 6: Final answer
    x = 1,993,168.80

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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.