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Finding the Fourth Proportional to 1,936,543.03, 2,672,392.15 and 1,065,326.80

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Solution

The fourth proportional to 1,936,543.03, 2,672,392.15 and 1,065,326.80 is: 1,470,130.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,936,543.03 : 2,672,392.15 = 1,065,326.80 : x
  2. Step 2: Convert to fraction form
    1,936,543.03/2,672,392.15 = 1,065,326.80/x
  3. Step 3: Cross multiply
    1,936,543.03x = 2,672,392.15 × 1,065,326.80
  4. Step 4: Simplify right side
    1,936,543.03x = 2,846,970,972,177.99
  5. Step 5: Solve for x
    x = 2,846,970,972,177.99/1,936,543.03
  6. Step 6: Final answer
    x = 1,470,130.50

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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.