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Finding the Fourth Proportional to 1,278,734.95, 1,764,528.60 and 705,738.13

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Solution

The fourth proportional to 1,278,734.95, 1,764,528.60 and 705,738.13 is: 973,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,734.95 : 1,764,528.60 = 705,738.13 : x
  2. Step 2: Convert to fraction form
    1,278,734.95/1,764,528.60 = 705,738.13/x
  3. Step 3: Cross multiply
    1,278,734.95x = 1,764,528.60 × 705,738.13
  4. Step 4: Simplify right side
    1,278,734.95x = 1,245,295,114,495.52
  5. Step 5: Solve for x
    x = 1,245,295,114,495.52/1,278,734.95
  6. Step 6: Final answer
    x = 973,849.28

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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.