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Finding the Fourth Proportional to 2,812,005, 4,218,726.78 and 817,461

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Solution

The fourth proportional to 2,812,005, 4,218,726.78 and 817,461 is: 1,226,400.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812,005 : 4,218,726.78 = 817,461 : x
  2. Step 2: Convert to fraction form
    2,812,005/4,218,726.78 = 817,461/x
  3. Step 3: Cross multiply
    2,812,005x = 4,218,726.78 × 817,461
  4. Step 4: Simplify right side
    2,812,005x = 3,448,644,612,305.58
  5. Step 5: Solve for x
    x = 3,448,644,612,305.58/2,812,005
  6. Step 6: Final answer
    x = 1,226,400.60

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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.