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Finding the Fourth Proportional to 1,691,827.11, 2,334,869.01 and 928,028.25

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Solution

The fourth proportional to 1,691,827.11, 2,334,869.01 and 928,028.25 is: 1,280,759.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691,827.11 : 2,334,869.01 = 928,028.25 : x
  2. Step 2: Convert to fraction form
    1,691,827.11/2,334,869.01 = 928,028.25/x
  3. Step 3: Cross multiply
    1,691,827.11x = 2,334,869.01 × 928,028.25
  4. Step 4: Simplify right side
    1,691,827.11x = 2,166,824,401,329.53
  5. Step 5: Solve for x
    x = 2,166,824,401,329.53/1,691,827.11
  6. Step 6: Final answer
    x = 1,280,759.95

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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.