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Finding the Fourth Proportional to 1,965,969.87, 2,711,640.88 and 1,312,266.30

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Solution

The fourth proportional to 1,965,969.87, 2,711,640.88 and 1,312,266.30 is: 1,809,994.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965,969.87 : 2,711,640.88 = 1,312,266.30 : x
  2. Step 2: Convert to fraction form
    1,965,969.87/2,711,640.88 = 1,312,266.30/x
  3. Step 3: Cross multiply
    1,965,969.87x = 2,711,640.88 × 1,312,266.30
  4. Step 4: Simplify right side
    1,965,969.87x = 3,558,394,944,526.34
  5. Step 5: Solve for x
    x = 3,558,394,944,526.34/1,965,969.87
  6. Step 6: Final answer
    x = 1,809,994.65

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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.