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Finding the Fourth Proportional to 819,761.41, 1,221,399.86 and 773,924.63

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Solution

The fourth proportional to 819,761.41, 1,221,399.86 and 773,924.63 is: 1,153,105.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,761.41 : 1,221,399.86 = 773,924.63 : x
  2. Step 2: Convert to fraction form
    819,761.41/1,221,399.86 = 773,924.63/x
  3. Step 3: Cross multiply
    819,761.41x = 1,221,399.86 × 773,924.63
  4. Step 4: Simplify right side
    819,761.41x = 945,271,429,109.26
  5. Step 5: Solve for x
    x = 945,271,429,109.26/819,761.41
  6. Step 6: Final answer
    x = 1,153,105.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.