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Finding the Fourth Proportional to 1,247,814.06, 1,721,983.40 and 674,854.23

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Solution

The fourth proportional to 1,247,814.06, 1,721,983.40 and 674,854.23 is: 931,298.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,814.06 : 1,721,983.40 = 674,854.23 : x
  2. Step 2: Convert to fraction form
    1,247,814.06/1,721,983.40 = 674,854.23/x
  3. Step 3: Cross multiply
    1,247,814.06x = 1,721,983.40 × 674,854.23
  4. Step 4: Simplify right side
    1,247,814.06x = 1,162,087,790,889.71
  5. Step 5: Solve for x
    x = 1,162,087,790,889.71/1,247,814.06
  6. Step 6: Final answer
    x = 931,298.84

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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.