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Finding the Fourth Proportional to 1,265,558.58, 1,746,500.94 and 721,746.45

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Solution

The fourth proportional to 1,265,558.58, 1,746,500.94 and 721,746.45 is: 996,027.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,558.58 : 1,746,500.94 = 721,746.45 : x
  2. Step 2: Convert to fraction form
    1,265,558.58/1,746,500.94 = 721,746.45/x
  3. Step 3: Cross multiply
    1,265,558.58x = 1,746,500.94 × 721,746.45
  4. Step 4: Simplify right side
    1,265,558.58x = 1,260,530,853,366.66
  5. Step 5: Solve for x
    x = 1,260,530,853,366.66/1,265,558.58
  6. Step 6: Final answer
    x = 996,027.27

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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.