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Finding the Fourth Proportional to 1,970,654.92, 2,719,584.42 and 1,245,237.92

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Solution

The fourth proportional to 1,970,654.92, 2,719,584.42 and 1,245,237.92 is: 1,718,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970,654.92 : 2,719,584.42 = 1,245,237.92 : x
  2. Step 2: Convert to fraction form
    1,970,654.92/2,719,584.42 = 1,245,237.92/x
  3. Step 3: Cross multiply
    1,970,654.92x = 2,719,584.42 × 1,245,237.92
  4. Step 4: Simplify right side
    1,970,654.92x = 3,386,529,646,425.21
  5. Step 5: Solve for x
    x = 3,386,529,646,425.21/1,970,654.92
  6. Step 6: Final answer
    x = 1,718,479.28

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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.