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Finding the Fourth Proportional to 1,835,188.80, 2,752,783.20 and 1,693,471.20

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Solution

The fourth proportional to 1,835,188.80, 2,752,783.20 and 1,693,471.20 is: 2,540,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,835,188.80 : 2,752,783.20 = 1,693,471.20 : x
  2. Step 2: Convert to fraction form
    1,835,188.80/2,752,783.20 = 1,693,471.20/x
  3. Step 3: Cross multiply
    1,835,188.80x = 2,752,783.20 × 1,693,471.20
  4. Step 4: Simplify right side
    1,835,188.80x = 4,661,759,069,043.84
  5. Step 5: Solve for x
    x = 4,661,759,069,043.84/1,835,188.80
  6. Step 6: Final answer
    x = 2,540,206.80

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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.