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Finding the Fourth Proportional to 1,984,555.68, 2,977,817.67 and 786,451.47

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Solution

The fourth proportional to 1,984,555.68, 2,977,817.67 and 786,451.47 is: 1,180,067.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,555.68 : 2,977,817.67 = 786,451.47 : x
  2. Step 2: Convert to fraction form
    1,984,555.68/2,977,817.67 = 786,451.47/x
  3. Step 3: Cross multiply
    1,984,555.68x = 2,977,817.67 × 786,451.47
  4. Step 4: Simplify right side
    1,984,555.68x = 2,341,909,093,374.15
  5. Step 5: Solve for x
    x = 2,341,909,093,374.15/1,984,555.68
  6. Step 6: Final answer
    x = 1,180,067.21

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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.