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Finding the Fourth Proportional to 1,409,348.87, 1,944,906.59 and 764,769.04

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Solution

The fourth proportional to 1,409,348.87, 1,944,906.59 and 764,769.04 is: 1,055,384.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409,348.87 : 1,944,906.59 = 764,769.04 : x
  2. Step 2: Convert to fraction form
    1,409,348.87/1,944,906.59 = 764,769.04/x
  3. Step 3: Cross multiply
    1,409,348.87x = 1,944,906.59 × 764,769.04
  4. Step 4: Simplify right side
    1,409,348.87x = 1,487,404,342,773.63
  5. Step 5: Solve for x
    x = 1,487,404,342,773.63/1,409,348.87
  6. Step 6: Final answer
    x = 1,055,384.07

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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.