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Finding the Fourth Proportional to 1,628,416, 2,247,215.04 and 992,512

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Solution

The fourth proportional to 1,628,416, 2,247,215.04 and 992,512 is: 1,369,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628,416 : 2,247,215.04 = 992,512 : x
  2. Step 2: Convert to fraction form
    1,628,416/2,247,215.04 = 992,512/x
  3. Step 3: Cross multiply
    1,628,416x = 2,247,215.04 × 992,512
  4. Step 4: Simplify right side
    1,628,416x = 2,230,387,893,780.48
  5. Step 5: Solve for x
    x = 2,230,387,893,780.48/1,628,416
  6. Step 6: Final answer
    x = 1,369,667.15

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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.