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Finding the Fourth Proportional to 1,247,826.06, 1,721,999.97 and 674,866.23

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Solution

The fourth proportional to 1,247,826.06, 1,721,999.97 and 674,866.23 is: 931,315.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,826.06 : 1,721,999.97 = 674,866.23 : x
  2. Step 2: Convert to fraction form
    1,247,826.06/1,721,999.97 = 674,866.23/x
  3. Step 3: Cross multiply
    1,247,826.06x = 1,721,999.97 × 674,866.23
  4. Step 4: Simplify right side
    1,247,826.06x = 1,162,119,627,814.01
  5. Step 5: Solve for x
    x = 1,162,119,627,814.01/1,247,826.06
  6. Step 6: Final answer
    x = 931,315.40

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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.