Home / 78,568,961.28-117,652,213.32-65,582,823.64

Finding the Fourth Proportional to 78,568,961.28, 117,652,213.32 and 65,582,823.64

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Solution

The fourth proportional to 78,568,961.28, 117,652,213.32 and 65,582,823.64 is: 98,206,266.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,568,961.28 : 117,652,213.32 = 65,582,823.64 : x
  2. Step 2: Convert to fraction form
    78,568,961.28/117,652,213.32 = 65,582,823.64/x
  3. Step 3: Cross multiply
    78,568,961.28x = 117,652,213.32 × 65,582,823.64
  4. Step 4: Simplify right side
    78,568,961.28x = 7,715,964,357,021,218
  5. Step 5: Solve for x
    x = 7,715,964,357,021,218/78,568,961.28
  6. Step 6: Final answer
    x = 98,206,266.59

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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.