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Finding the Fourth Proportional to 3,270,978.04, 4,513,949.88 and 1,820,642.38

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Solution

The fourth proportional to 3,270,978.04, 4,513,949.88 and 1,820,642.38 is: 2,512,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270,978.04 : 4,513,949.88 = 1,820,642.38 : x
  2. Step 2: Convert to fraction form
    3,270,978.04/4,513,949.88 = 1,820,642.38/x
  3. Step 3: Cross multiply
    3,270,978.04x = 4,513,949.88 × 1,820,642.38
  4. Step 4: Simplify right side
    3,270,978.04x = 8,218,288,452,723.91
  5. Step 5: Solve for x
    x = 8,218,288,452,723.91/3,270,978.04
  6. Step 6: Final answer
    x = 2,512,486.59

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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.