Home / 209,485,399.84-289,098,821.12-116,665,907.60

Finding the Fourth Proportional to 209,485,399.84, 289,098,821.12 and 116,665,907.60

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Solution

The fourth proportional to 209,485,399.84, 289,098,821.12 and 116,665,907.60 is: 161,003,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,485,399.84 : 289,098,821.12 = 116,665,907.60 : x
  2. Step 2: Convert to fraction form
    209,485,399.84/289,098,821.12 = 116,665,907.60/x
  3. Step 3: Cross multiply
    209,485,399.84x = 289,098,821.12 × 116,665,907.60
  4. Step 4: Simplify right side
    209,485,399.84x = 33,727,976,352,054,848
  5. Step 5: Solve for x
    x = 33,727,976,352,054,848/209,485,399.84
  6. Step 6: Final answer
    x = 161,003,947.66

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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.