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Finding the Fourth Proportional to 18,843,619.40, 28,265,429.10 and 16,954,051.40

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Solution

The fourth proportional to 18,843,619.40, 28,265,429.10 and 16,954,051.40 is: 25,431,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,843,619.40 : 28,265,429.10 = 16,954,051.40 : x
  2. Step 2: Convert to fraction form
    18,843,619.40/28,265,429.10 = 16,954,051.40/x
  3. Step 3: Cross multiply
    18,843,619.40x = 28,265,429.10 × 16,954,051.40
  4. Step 4: Simplify right side
    18,843,619.40x = 479,213,537,804,455.75
  5. Step 5: Solve for x
    x = 479,213,537,804,455.75/18,843,619.40
  6. Step 6: Final answer
    x = 25,431,077.10

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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.