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Finding the Fourth Proportional to 53,900,536.40, 80,850,804.60 and 21,536,435.60

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Solution

The fourth proportional to 53,900,536.40, 80,850,804.60 and 21,536,435.60 is: 32,304,653.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,900,536.40 : 80,850,804.60 = 21,536,435.60 : x
  2. Step 2: Convert to fraction form
    53,900,536.40/80,850,804.60 = 21,536,435.60/x
  3. Step 3: Cross multiply
    53,900,536.40x = 80,850,804.60 × 21,536,435.60
  4. Step 4: Simplify right side
    53,900,536.40x = 1,741,238,146,476,083.75
  5. Step 5: Solve for x
    x = 1,741,238,146,476,083.75/53,900,536.40
  6. Step 6: Final answer
    x = 32,304,653.40

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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.