Home / 18,765,317.23-25,899,236.21-12,880,116.64

Finding the Fourth Proportional to 18,765,317.23, 25,899,236.21 and 12,880,116.64

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Solution

The fourth proportional to 18,765,317.23, 25,899,236.21 and 12,880,116.64 is: 17,776,687.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765,317.23 : 25,899,236.21 = 12,880,116.64 : x
  2. Step 2: Convert to fraction form
    18,765,317.23/25,899,236.21 = 12,880,116.64/x
  3. Step 3: Cross multiply
    18,765,317.23x = 25,899,236.21 × 12,880,116.64
  4. Step 4: Simplify right side
    18,765,317.23x = 333,585,183,271,711.56
  5. Step 5: Solve for x
    x = 333,585,183,271,711.56/18,765,317.23
  6. Step 6: Final answer
    x = 17,776,687.66

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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.