Home / 79,293.28-109,560.72-76,455.04

Finding the Fourth Proportional to 79,293.28, 109,560.72 and 76,455.04

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Solution

The fourth proportional to 79,293.28, 109,560.72 and 76,455.04 is: 105,639.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,293.28 : 109,560.72 = 76,455.04 : x
  2. Step 2: Convert to fraction form
    79,293.28/109,560.72 = 76,455.04/x
  3. Step 3: Cross multiply
    79,293.28x = 109,560.72 × 76,455.04
  4. Step 4: Simplify right side
    79,293.28x = 8,376,469,230.03
  5. Step 5: Solve for x
    x = 8,376,469,230.03/79,293.28
  6. Step 6: Final answer
    x = 105,639.08

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1.5x scale

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.