Home / 66,628.20-91,950.34-38,338.12

Finding the Fourth Proportional to 66,628.20, 91,950.34 and 38,338.12

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Solution

The fourth proportional to 66,628.20, 91,950.34 and 38,338.12 is: 52,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,628.20 : 91,950.34 = 38,338.12 : x
  2. Step 2: Convert to fraction form
    66,628.20/91,950.34 = 38,338.12/x
  3. Step 3: Cross multiply
    66,628.20x = 91,950.34 × 38,338.12
  4. Step 4: Simplify right side
    66,628.20x = 3,525,203,168.96
  5. Step 5: Solve for x
    x = 3,525,203,168.96/66,628.20
  6. Step 6: Final answer
    x = 52,908.58

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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.