Home / 18,709,608.41-28,059,541.07-7,921,356.11

Finding the Fourth Proportional to 18,709,608.41, 28,059,541.07 and 7,921,356.11

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Solution

The fourth proportional to 18,709,608.41, 28,059,541.07 and 7,921,356.11 is: 11,879,971.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709,608.41 : 28,059,541.07 = 7,921,356.11 : x
  2. Step 2: Convert to fraction form
    18,709,608.41/28,059,541.07 = 7,921,356.11/x
  3. Step 3: Cross multiply
    18,709,608.41x = 28,059,541.07 × 7,921,356.11
  4. Step 4: Simplify right side
    18,709,608.41x = 222,269,616,918,735.97
  5. Step 5: Solve for x
    x = 222,269,616,918,735.97/18,709,608.41
  6. Step 6: Final answer
    x = 11,879,971.62

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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.