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Finding the Fourth Proportional to 1,970,454.76, 2,719,227.60 and 1,065,036.76

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Solution

The fourth proportional to 1,970,454.76, 2,719,227.60 and 1,065,036.76 is: 1,469,750.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,454.76 : 2,719,227.60 = 1,065,036.76 : x
  2. Step 2: Convert to fraction form
    1,970,454.76/2,719,227.60 = 1,065,036.76/x
  3. Step 3: Cross multiply
    1,970,454.76x = 2,719,227.60 × 1,065,036.76
  4. Step 4: Simplify right side
    1,970,454.76x = 2,896,077,352,806.58
  5. Step 5: Solve for x
    x = 2,896,077,352,806.58/1,970,454.76
  6. Step 6: Final answer
    x = 1,469,750.75

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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.