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Finding the Fourth Proportional to 1,922,843.76, 2,653,857.36 and 1,158,898.20

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Solution

The fourth proportional to 1,922,843.76, 2,653,857.36 and 1,158,898.20 is: 1,599,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922,843.76 : 2,653,857.36 = 1,158,898.20 : x
  2. Step 2: Convert to fraction form
    1,922,843.76/2,653,857.36 = 1,158,898.20/x
  3. Step 3: Cross multiply
    1,922,843.76x = 2,653,857.36 × 1,158,898.20
  4. Step 4: Simplify right side
    1,922,843.76x = 3,075,550,517,560.75
  5. Step 5: Solve for x
    x = 3,075,550,517,560.75/1,922,843.76
  6. Step 6: Final answer
    x = 1,599,480.20

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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.