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Finding the Fourth Proportional to 873,274.55, 1,309,836.79 and 531,629.30

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Solution

The fourth proportional to 873,274.55, 1,309,836.79 and 531,629.30 is: 797,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,274.55 : 1,309,836.79 = 531,629.30 : x
  2. Step 2: Convert to fraction form
    873,274.55/1,309,836.79 = 531,629.30/x
  3. Step 3: Cross multiply
    873,274.55x = 1,309,836.79 × 531,629.30
  4. Step 4: Simplify right side
    873,274.55x = 696,347,619,721.08
  5. Step 5: Solve for x
    x = 696,347,619,721.08/873,274.55
  6. Step 6: Final answer
    x = 797,398.28

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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.