Home / 78,183.36-117,275.07-19,018.66

Finding the Fourth Proportional to 78,183.36, 117,275.07 and 19,018.66

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Solution

The fourth proportional to 78,183.36, 117,275.07 and 19,018.66 is: 28,528.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,183.36 : 117,275.07 = 19,018.66 : x
  2. Step 2: Convert to fraction form
    78,183.36/117,275.07 = 19,018.66/x
  3. Step 3: Cross multiply
    78,183.36x = 117,275.07 × 19,018.66
  4. Step 4: Simplify right side
    78,183.36x = 2,230,414,635.26
  5. Step 5: Solve for x
    x = 2,230,414,635.26/78,183.36
  6. Step 6: Final answer
    x = 28,528.00

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1.5x scale

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.