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Finding the Fourth Proportional to 1,320,799.28, 1,822,755.28 and 740,027.46

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Solution

The fourth proportional to 1,320,799.28, 1,822,755.28 and 740,027.46 is: 1,021,267.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,799.28 : 1,822,755.28 = 740,027.46 : x
  2. Step 2: Convert to fraction form
    1,320,799.28/1,822,755.28 = 740,027.46/x
  3. Step 3: Cross multiply
    1,320,799.28x = 1,822,755.28 × 740,027.46
  4. Step 4: Simplify right side
    1,320,799.28x = 1,348,888,960,059.99
  5. Step 5: Solve for x
    x = 1,348,888,960,059.99/1,320,799.28
  6. Step 6: Final answer
    x = 1,021,267.18

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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.