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Finding the Fourth Proportional to 1,246,742.54, 1,721,358.51 and 794,645.90

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Solution

The fourth proportional to 1,246,742.54, 1,721,358.51 and 794,645.90 is: 1,097,155.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246,742.54 : 1,721,358.51 = 794,645.90 : x
  2. Step 2: Convert to fraction form
    1,246,742.54/1,721,358.51 = 794,645.90/x
  3. Step 3: Cross multiply
    1,246,742.54x = 1,721,358.51 × 794,645.90
  4. Step 4: Simplify right side
    1,246,742.54x = 1,367,870,482,401.61
  5. Step 5: Solve for x
    x = 1,367,870,482,401.61/1,246,742.54
  6. Step 6: Final answer
    x = 1,097,155.54

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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.