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Finding the Fourth Proportional to 1,813,581.09, 2,502,689.06 and 986,629.01

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Solution

The fourth proportional to 1,813,581.09, 2,502,689.06 and 986,629.01 is: 1,361,519.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813,581.09 : 2,502,689.06 = 986,629.01 : x
  2. Step 2: Convert to fraction form
    1,813,581.09/2,502,689.06 = 986,629.01/x
  3. Step 3: Cross multiply
    1,813,581.09x = 2,502,689.06 × 986,629.01
  4. Step 4: Simplify right side
    1,813,581.09x = 2,469,225,619,558.76
  5. Step 5: Solve for x
    x = 2,469,225,619,558.76/1,813,581.09
  6. Step 6: Final answer
    x = 1,361,519.28

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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.