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Finding the Fourth Proportional to 1,681,855.74, 2,320,153.74 and 1,100,823.30

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Solution

The fourth proportional to 1,681,855.74, 2,320,153.74 and 1,100,823.30 is: 1,518,607.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681,855.74 : 2,320,153.74 = 1,100,823.30 : x
  2. Step 2: Convert to fraction form
    1,681,855.74/2,320,153.74 = 1,100,823.30/x
  3. Step 3: Cross multiply
    1,681,855.74x = 2,320,153.74 × 1,100,823.30
  4. Step 4: Simplify right side
    1,681,855.74x = 2,554,079,296,574.14
  5. Step 5: Solve for x
    x = 2,554,079,296,574.14/1,681,855.74
  6. Step 6: Final answer
    x = 1,518,607.83

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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.