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Finding the Fourth Proportional to 7,176.88, 9,904.26 and 4,033.12

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Solution

The fourth proportional to 7,176.88, 9,904.26 and 4,033.12 is: 5,565.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.88 : 9,904.26 = 4,033.12 : x
  2. Step 2: Convert to fraction form
    7,176.88/9,904.26 = 4,033.12/x
  3. Step 3: Cross multiply
    7,176.88x = 9,904.26 × 4,033.12
  4. Step 4: Simplify right side
    7,176.88x = 39,945,069.09
  5. Step 5: Solve for x
    x = 39,945,069.09/7,176.88
  6. Step 6: Final answer
    x = 5,565.80

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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.