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Finding the Fourth Proportional to 1,964,987.54, 2,947,481.12 and 545,043.68

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Solution

The fourth proportional to 1,964,987.54, 2,947,481.12 and 545,043.68 is: 817,565.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,987.54 : 2,947,481.12 = 545,043.68 : x
  2. Step 2: Convert to fraction form
    1,964,987.54/2,947,481.12 = 545,043.68/x
  3. Step 3: Cross multiply
    1,964,987.54x = 2,947,481.12 × 545,043.68
  4. Step 4: Simplify right side
    1,964,987.54x = 1,606,505,956,375.32
  5. Step 5: Solve for x
    x = 1,606,505,956,375.32/1,964,987.54
  6. Step 6: Final answer
    x = 817,565.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.