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Finding the Fourth Proportional to 1,803,969.81, 2,489,372.01 and 988,011

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Solution

The fourth proportional to 1,803,969.81, 2,489,372.01 and 988,011 is: 1,363,396.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,803,969.81 : 2,489,372.01 = 988,011 : x
  2. Step 2: Convert to fraction form
    1,803,969.81/2,489,372.01 = 988,011/x
  3. Step 3: Cross multiply
    1,803,969.81x = 2,489,372.01 × 988,011
  4. Step 4: Simplify right side
    1,803,969.81x = 2,459,526,928,972.11
  5. Step 5: Solve for x
    x = 2,459,526,928,972.11/1,803,969.81
  6. Step 6: Final answer
    x = 1,363,396.95

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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.