Home / 18,693,561.60-28,040,342.40-11,513,203.20

Finding the Fourth Proportional to 18,693,561.60, 28,040,342.40 and 11,513,203.20

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Solution

The fourth proportional to 18,693,561.60, 28,040,342.40 and 11,513,203.20 is: 17,269,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,561.60 : 28,040,342.40 = 11,513,203.20 : x
  2. Step 2: Convert to fraction form
    18,693,561.60/28,040,342.40 = 11,513,203.20/x
  3. Step 3: Cross multiply
    18,693,561.60x = 28,040,342.40 × 11,513,203.20
  4. Step 4: Simplify right side
    18,693,561.60x = 322,834,159,848,775.62
  5. Step 5: Solve for x
    x = 322,834,159,848,775.62/18,693,561.60
  6. Step 6: Final answer
    x = 17,269,804.80

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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.