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Finding the Fourth Proportional to 1,247,801.97, 1,721,967.87 and 674,842.16

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Solution

The fourth proportional to 1,247,801.97, 1,721,967.87 and 674,842.16 is: 931,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,801.97 : 1,721,967.87 = 674,842.16 : x
  2. Step 2: Convert to fraction form
    1,247,801.97/1,721,967.87 = 674,842.16/x
  3. Step 3: Cross multiply
    1,247,801.97x = 1,721,967.87 × 674,842.16
  4. Step 4: Simplify right side
    1,247,801.97x = 1,162,056,508,231.56
  5. Step 5: Solve for x
    x = 1,162,056,508,231.56/1,247,801.97
  6. Step 6: Final answer
    x = 931,282.80

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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.