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Finding the Fourth Proportional to 7,222.68, 9,975.53 and 4,860.72

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Solution

The fourth proportional to 7,222.68, 9,975.53 and 4,860.72 is: 6,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.68 : 9,975.53 = 4,860.72 : x
  2. Step 2: Convert to fraction form
    7,222.68/9,975.53 = 4,860.72/x
  3. Step 3: Cross multiply
    7,222.68x = 9,975.53 × 4,860.72
  4. Step 4: Simplify right side
    7,222.68x = 48,488,233.88
  5. Step 5: Solve for x
    x = 48,488,233.88/7,222.68
  6. Step 6: Final answer
    x = 6,713.33

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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.